./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array6_pattern.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-patterns/array6_pattern.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 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:15:02,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:15:02,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:15:02,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:15:02,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:15:02,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:15:02,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:15:02,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:15:02,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:15:02,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:15:02,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:15:02,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:15:02,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:15:02,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:15:02,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:15:02,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:15:02,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:15:02,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:15:02,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:15:02,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:15:02,492 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:15:02,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:15:02,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:15:02,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:15:02,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:15:02,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:15:02,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:15:02,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:15:02,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:15:02,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:15:02,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:15:02,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:15:02,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:15:02,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:15:02,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:15:02,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:15:02,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:15:02,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:15:02,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:15:02,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:15:02,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:15:02,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:15:02,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:15:02,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:15:02,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:15:02,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:15:02,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:15:02,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:15:02,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:15:02,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:15:02,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:15:02,549 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:15:02,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:15:02,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:15:02,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:15:02,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:15:02,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:15:02,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:15:02,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:15:02,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:15:02,550 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:15:02,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:15:02,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:15:02,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:15:02,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:15:02,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:15:02,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:15:02,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:15:02,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:15:02,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:15:02,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:15:02,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:15:02,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:15:02,553 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:15:02,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:15:02,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:15:02,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2022-07-19 10:15:02,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:15:02,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:15:02,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:15:02,789 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:15:02,790 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:15:02,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-19 10:15:02,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c803351/55466cbbb9924dbba71dde917f8c30e7/FLAG3adc898ac [2022-07-19 10:15:03,215 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:15:03,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-19 10:15:03,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c803351/55466cbbb9924dbba71dde917f8c30e7/FLAG3adc898ac [2022-07-19 10:15:03,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c803351/55466cbbb9924dbba71dde917f8c30e7 [2022-07-19 10:15:03,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:15:03,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:15:03,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:15:03,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:15:03,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:15:03,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606ac159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03, skipping insertion in model container [2022-07-19 10:15:03,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:15:03,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:15:03,799 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-patterns/array6_pattern.c[1356,1369] [2022-07-19 10:15:03,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:15:03,835 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:15:03,847 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-patterns/array6_pattern.c[1356,1369] [2022-07-19 10:15:03,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:15:03,880 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:15:03,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03 WrapperNode [2022-07-19 10:15:03,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:15:03,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:15:03,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:15:03,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:15:03,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,922 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-07-19 10:15:03,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:15:03,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:15:03,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:15:03,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:15:03,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:15:03,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:15:03,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:15:03,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:15:03,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (1/1) ... [2022-07-19 10:15:03,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:15:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:15:03,987 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 10:15:04,006 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 10:15:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:15:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 10:15:04,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 10:15:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:15:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:15:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:15:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:15:04,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:15:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:15:04,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:15:04,086 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:15:04,087 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:15:04,231 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:15:04,235 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:15:04,239 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 10:15:04,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:15:04 BoogieIcfgContainer [2022-07-19 10:15:04,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:15:04,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:15:04,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:15:04,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:15:04,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:15:03" (1/3) ... [2022-07-19 10:15:04,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d3cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:15:04, skipping insertion in model container [2022-07-19 10:15:04,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:03" (2/3) ... [2022-07-19 10:15:04,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d3cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:15:04, skipping insertion in model container [2022-07-19 10:15:04,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:15:04" (3/3) ... [2022-07-19 10:15:04,270 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-07-19 10:15:04,295 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:15:04,295 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:15:04,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:15:04,335 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@7fc2f7d1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@656c79df [2022-07-19 10:15:04,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:15:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:15:04,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:04,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:04,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-07-19 10:15:04,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:04,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91208678] [2022-07-19 10:15:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 10:15:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,487 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 10:15:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:04,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91208678] [2022-07-19 10:15:04,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91208678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:15:04,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:15:04,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:15:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93555826] [2022-07-19 10:15:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:15:04,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:15:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:04,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:15:04,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:15:04,514 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 10:15:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:04,525 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-07-19 10:15:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:15:04,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-19 10:15:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:04,531 INFO L225 Difference]: With dead ends: 47 [2022-07-19 10:15:04,531 INFO L226 Difference]: Without dead ends: 21 [2022-07-19 10:15:04,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 10:15:04,535 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 10:15:04,535 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 10:15:04,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-19 10:15:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-19 10:15:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-19 10:15:04,563 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-07-19 10:15:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:04,564 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-19 10:15:04,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 10:15:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-19 10:15:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:15:04,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:04,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:04,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:15:04,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:04,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-07-19 10:15:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:04,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635919226] [2022-07-19 10:15:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:04,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 10:15:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 10:15:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:15:04,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:04,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635919226] [2022-07-19 10:15:04,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635919226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:15:04,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:15:04,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:15:04,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588561199] [2022-07-19 10:15:04,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:15:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:15:04,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:04,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:15:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:15:04,655 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:04,679 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-19 10:15:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:15:04,679 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-19 10:15:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:04,680 INFO L225 Difference]: With dead ends: 26 [2022-07-19 10:15:04,680 INFO L226 Difference]: Without dead ends: 22 [2022-07-19 10:15:04,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:15:04,681 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:15:04,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:15:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-19 10:15:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-19 10:15:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-19 10:15:04,685 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-07-19 10:15:04,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:04,686 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-19 10:15:04,687 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-19 10:15:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 10:15:04,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:04,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:04,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 10:15:04,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:04,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:04,688 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-07-19 10:15:04,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:04,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204163513] [2022-07-19 10:15:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:04,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 10:15:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 10:15:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:15:04,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:04,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204163513] [2022-07-19 10:15:04,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204163513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:15:04,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:15:04,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 10:15:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639584867] [2022-07-19 10:15:04,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:15:04,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 10:15:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 10:15:04,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:15:04,780 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:04,825 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-19 10:15:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 10:15:04,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-07-19 10:15:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:04,829 INFO L225 Difference]: With dead ends: 41 [2022-07-19 10:15:04,829 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 10:15:04,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:15:04,834 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:15:04,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:15:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 10:15:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-19 10:15:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-19 10:15:04,845 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-07-19 10:15:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:04,845 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-19 10:15:04,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-19 10:15:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 10:15:04,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:04,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:04,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 10:15:04,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-07-19 10:15:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:04,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620251608] [2022-07-19 10:15:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:04,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:15:04,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869781314] [2022-07-19 10:15:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:04,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:04,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:15:04,881 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 10:15:04,882 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 10:15:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:15:04,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:15:04,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:15:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 10:15:05,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:15:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:15:05,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:05,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620251608] [2022-07-19 10:15:05,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:15:05,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869781314] [2022-07-19 10:15:05,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869781314] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:15:05,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:15:05,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-19 10:15:05,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839471788] [2022-07-19 10:15:05,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:15:05,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 10:15:05,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 10:15:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-19 10:15:05,209 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:15:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:05,423 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-07-19 10:15:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 10:15:05,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-07-19 10:15:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:05,426 INFO L225 Difference]: With dead ends: 71 [2022-07-19 10:15:05,427 INFO L226 Difference]: Without dead ends: 43 [2022-07-19 10:15:05,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-07-19 10:15:05,432 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:15:05,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:15:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-19 10:15:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-07-19 10:15:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-19 10:15:05,444 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2022-07-19 10:15:05,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:05,445 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-19 10:15:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:15:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-19 10:15:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 10:15:05,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:05,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:05,481 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 10:15:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:05,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1559224519, now seen corresponding path program 2 times [2022-07-19 10:15:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:05,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808572566] [2022-07-19 10:15:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:05,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:15:05,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26026518] [2022-07-19 10:15:05,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:15:05,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:05,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:15:05,680 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 10:15:05,681 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 10:15:05,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:15:05,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:15:05,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 10:15:05,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:15:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:15:05,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:15:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:15:05,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:05,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808572566] [2022-07-19 10:15:05,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:15:05,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26026518] [2022-07-19 10:15:05,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26026518] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:15:05,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:15:05,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-19 10:15:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779768104] [2022-07-19 10:15:05,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:15:05,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 10:15:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 10:15:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:15:05,947 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:15:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:06,062 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-19 10:15:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 10:15:06,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-07-19 10:15:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:06,064 INFO L225 Difference]: With dead ends: 39 [2022-07-19 10:15:06,064 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 10:15:06,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-07-19 10:15:06,065 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:15:06,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:15:06,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 10:15:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-19 10:15:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-19 10:15:06,084 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2022-07-19 10:15:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:06,084 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-19 10:15:06,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:15:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-19 10:15:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 10:15:06,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:06,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:06,110 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 10:15:06,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:06,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 3 times [2022-07-19 10:15:06,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:06,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137150372] [2022-07-19 10:15:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:06,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:06,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:15:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061985302] [2022-07-19 10:15:06,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:15:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:06,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:15:06,319 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 10:15:06,339 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 10:15:06,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-19 10:15:06,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:15:06,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-19 10:15:06,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:15:06,487 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 10:15:06,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,513 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 10:15:06,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-19 10:15:06,521 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 33 treesize of output 32 [2022-07-19 10:15:06,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,610 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2022-07-19 10:15:06,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2022-07-19 10:15:06,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-19 10:15:06,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,701 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-07-19 10:15:06,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,728 INFO L356 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-07-19 10:15:06,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 34 [2022-07-19 10:15:06,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:06,746 INFO L356 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-07-19 10:15:06,746 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-07-19 10:15:07,299 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-19 10:15:07,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 334 treesize of output 217 [2022-07-19 10:15:07,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 158 treesize of output 130 [2022-07-19 10:15:07,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-19 10:15:07,370 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-19 10:15:07,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 219 [2022-07-19 10:15:07,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,426 INFO L356 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-07-19 10:15:07,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 160 [2022-07-19 10:15:07,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:07,489 INFO L356 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-07-19 10:15:07,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 82 [2022-07-19 10:15:07,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-07-19 10:15:07,814 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-19 10:15:07,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 177 treesize of output 160 [2022-07-19 10:15:07,824 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 17 treesize of output 11 [2022-07-19 10:15:12,475 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 10:15:12,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 143 [2022-07-19 10:15:12,785 INFO L356 Elim1Store]: treesize reduction 86, result has 71.2 percent of original size [2022-07-19 10:15:12,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 130 treesize of output 306 [2022-07-19 10:15:13,054 INFO L356 Elim1Store]: treesize reduction 86, result has 71.2 percent of original size [2022-07-19 10:15:13,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 327 treesize of output 503 [2022-07-19 10:15:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:15:34,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:15:42,007 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int)) (|v_ULTIMATE.start_main_~count~0#1_34| Int) (v_ArrVal_213 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~count~0#1_34| 2)) (= (let ((.cse4 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_213) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse5 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse4)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse1 (* |v_ULTIMATE.start_main_~count~0#1_34| 4))) (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse2 (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_34| 1) c_~ARR_SIZE~0))) is different from false [2022-07-19 10:15:42,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137150372] [2022-07-19 10:15:42,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:15:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061985302] [2022-07-19 10:15:42,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061985302] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:15:42,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 10:15:42,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-19 10:15:42,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987421150] [2022-07-19 10:15:42,185 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 10:15:42,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 10:15:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 10:15:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=780, Unknown=7, NotChecked=58, Total=992 [2022-07-19 10:15:42,186 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:42,417 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-07-19 10:15:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 10:15:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-19 10:15:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:42,418 INFO L225 Difference]: With dead ends: 59 [2022-07-19 10:15:42,419 INFO L226 Difference]: Without dead ends: 55 [2022-07-19 10:15:42,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=176, Invalid=1011, Unknown=7, NotChecked=66, Total=1260 [2022-07-19 10:15:42,420 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:15:42,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 204 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 108 Unchecked, 0.1s Time] [2022-07-19 10:15:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-19 10:15:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2022-07-19 10:15:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:15:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-07-19 10:15:42,428 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2022-07-19 10:15:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:42,429 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-07-19 10:15:42,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:15:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-07-19 10:15:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 10:15:42,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:42,432 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:42,453 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 10:15:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:42,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 4 times [2022-07-19 10:15:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:42,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920403428] [2022-07-19 10:15:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:42,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:15:42,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977583666] [2022-07-19 10:15:42,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:15:42,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:15:42,695 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 10:15:42,698 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 10:15:42,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:15:42,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:15:42,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 10:15:42,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:15:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:15:42,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:15:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:15:42,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920403428] [2022-07-19 10:15:42,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:15:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977583666] [2022-07-19 10:15:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977583666] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:15:42,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:15:42,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-19 10:15:42,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007824087] [2022-07-19 10:15:42,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:15:42,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 10:15:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 10:15:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-19 10:15:42,899 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:15:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:43,035 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2022-07-19 10:15:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 10:15:43,037 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-19 10:15:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:43,040 INFO L225 Difference]: With dead ends: 87 [2022-07-19 10:15:43,040 INFO L226 Difference]: Without dead ends: 73 [2022-07-19 10:15:43,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-07-19 10:15:43,041 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 88 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:15:43,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 100 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:15:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-19 10:15:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2022-07-19 10:15:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:15:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-07-19 10:15:43,057 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 36 [2022-07-19 10:15:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:43,058 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-07-19 10:15:43,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:15:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-07-19 10:15:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 10:15:43,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:43,059 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:43,080 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 10:15:43,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:43,269 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:43,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:43,270 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 5 times [2022-07-19 10:15:43,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:43,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441377301] [2022-07-19 10:15:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:43,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:43,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:15:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712920992] [2022-07-19 10:15:43,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:15:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:15:43,298 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 10:15:43,298 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 10:15:43,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-19 10:15:43,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:15:43,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 10:15:43,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:15:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:15:43,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:15:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:15:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:15:43,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441377301] [2022-07-19 10:15:43,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:15:43,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712920992] [2022-07-19 10:15:43,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712920992] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:15:43,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:15:43,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-19 10:15:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815950794] [2022-07-19 10:15:43,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:15:43,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 10:15:43,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:15:43,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 10:15:43,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-19 10:15:43,556 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:15:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:15:43,730 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2022-07-19 10:15:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 10:15:43,731 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-19 10:15:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:15:43,731 INFO L225 Difference]: With dead ends: 72 [2022-07-19 10:15:43,731 INFO L226 Difference]: Without dead ends: 68 [2022-07-19 10:15:43,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-19 10:15:43,732 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:15:43,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 149 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:15:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-19 10:15:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2022-07-19 10:15:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:15:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-07-19 10:15:43,739 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 36 [2022-07-19 10:15:43,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:15:43,740 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-07-19 10:15:43,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:15:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-07-19 10:15:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 10:15:43,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:15:43,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:15:43,760 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 10:15:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:43,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:15:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:15:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 6 times [2022-07-19 10:15:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:15:43,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117357579] [2022-07-19 10:15:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:15:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:15:43,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:15:43,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887737064] [2022-07-19 10:15:43,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 10:15:43,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:15:43,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:15:43,970 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 10:15:43,971 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 10:15:44,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-19 10:15:44,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:15:44,190 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-19 10:15:44,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:15:44,205 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 10:15:44,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,223 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 10:15:44,227 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 34 treesize of output 34 [2022-07-19 10:15:44,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-07-19 10:15:44,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-19 10:15:44,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,295 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-07-19 10:15:44,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 26 [2022-07-19 10:15:44,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-07-19 10:15:44,403 INFO L356 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-07-19 10:15:44,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 88 [2022-07-19 10:15:44,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 42 treesize of output 45 [2022-07-19 10:15:44,419 INFO L356 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-07-19 10:15:44,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 75 [2022-07-19 10:15:44,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-07-19 10:15:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 40 [2022-07-19 10:15:44,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:15:44,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 51 [2022-07-19 10:15:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:15:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:15:44,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 24 [2022-07-19 10:15:44,485 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 11 treesize of output 5 [2022-07-19 10:15:44,588 INFO L356 Elim1Store]: treesize reduction 40, result has 11.1 percent of original size [2022-07-19 10:15:44,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 193 treesize of output 140 [2022-07-19 10:15:44,602 INFO L356 Elim1Store]: treesize reduction 64, result has 7.2 percent of original size [2022-07-19 10:15:44,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 145 [2022-07-19 10:15:44,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 96 [2022-07-19 10:15:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:44,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 90 [2022-07-19 10:15:44,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 17 [2022-07-19 10:15:44,641 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 26 treesize of output 15 [2022-07-19 10:15:44,645 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 15 treesize of output 11 [2022-07-19 10:15:45,184 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-19 10:15:45,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 419 treesize of output 280 [2022-07-19 10:15:45,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 158 treesize of output 130 [2022-07-19 10:15:45,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-19 10:15:45,259 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-19 10:15:45,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 275 treesize of output 298 [2022-07-19 10:15:45,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,362 INFO L356 Elim1Store]: treesize reduction 166, result has 21.7 percent of original size [2022-07-19 10:15:45,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 89 treesize of output 136 [2022-07-19 10:15:45,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:45,459 INFO L356 Elim1Store]: treesize reduction 307, result has 13.0 percent of original size [2022-07-19 10:15:45,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 195 treesize of output 248 [2022-07-19 10:15:45,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 46 [2022-07-19 10:15:45,597 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 49 treesize of output 37 [2022-07-19 10:15:47,673 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 10:15:47,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 353 treesize of output 267 [2022-07-19 10:15:47,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:48,051 INFO L356 Elim1Store]: treesize reduction 62, result has 79.0 percent of original size [2022-07-19 10:15:48,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 25 case distinctions, treesize of input 284 treesize of output 454 [2022-07-19 10:15:48,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:15:48,359 INFO L356 Elim1Store]: treesize reduction 62, result has 79.0 percent of original size [2022-07-19 10:15:48,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 25 case distinctions, treesize of input 459 treesize of output 639 [2022-07-19 10:16:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:35,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:16:58,781 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int)) (|v_ULTIMATE.start_main_~count~0#1_75| Int) (v_ArrVal_455 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~count~0#1_75| 3)) (= (let ((.cse4 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_455) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse5 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 4))))))) (let ((.cse1 (* |v_ULTIMATE.start_main_~count~0#1_75| 4)) (.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse4)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse1)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse1)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_75| 1) c_~ARR_SIZE~0))) is different from false [2022-07-19 10:16:58,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:58,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117357579] [2022-07-19 10:16:58,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:16:58,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887737064] [2022-07-19 10:16:58,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887737064] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:16:58,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 10:16:58,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-19 10:16:58,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117761830] [2022-07-19 10:16:58,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 10:16:58,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 10:16:58,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:16:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 10:16:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=941, Unknown=12, NotChecked=64, Total=1190 [2022-07-19 10:16:58,958 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:16:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:16:59,531 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-07-19 10:16:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 10:16:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-19 10:16:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:16:59,532 INFO L225 Difference]: With dead ends: 91 [2022-07-19 10:16:59,532 INFO L226 Difference]: Without dead ends: 87 [2022-07-19 10:16:59,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=222, Invalid=1252, Unknown=12, NotChecked=74, Total=1560 [2022-07-19 10:16:59,533 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 10:16:59,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 216 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 119 Unchecked, 0.3s Time] [2022-07-19 10:16:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-19 10:16:59,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2022-07-19 10:16:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 10:16:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2022-07-19 10:16:59,545 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 38 [2022-07-19 10:16:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:16:59,546 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2022-07-19 10:16:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:16:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2022-07-19 10:16:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 10:16:59,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:16:59,547 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:16:59,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 10:16:59,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:59,759 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:16:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:16:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 7 times [2022-07-19 10:16:59,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:16:59,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643587453] [2022-07-19 10:16:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:16:59,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:16:59,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:16:59,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636105618] [2022-07-19 10:16:59,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-19 10:16:59,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:16:59,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:16:59,777 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 10:16:59,778 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 10:16:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:16:59,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 10:16:59,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:16:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:16:59,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:16:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:16:59,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:16:59,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643587453] [2022-07-19 10:16:59,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:16:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636105618] [2022-07-19 10:16:59,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636105618] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:16:59,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:16:59,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-19 10:17:00,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546357744] [2022-07-19 10:17:00,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:00,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 10:17:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:17:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 10:17:00,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-19 10:17:00,003 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:17:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:00,229 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2022-07-19 10:17:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 10:17:00,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-07-19 10:17:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:00,230 INFO L225 Difference]: With dead ends: 123 [2022-07-19 10:17:00,230 INFO L226 Difference]: Without dead ends: 107 [2022-07-19 10:17:00,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2022-07-19 10:17:00,231 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 97 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:00,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 145 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:17:00,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-19 10:17:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2022-07-19 10:17:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 71 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 10:17:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-07-19 10:17:00,243 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 40 [2022-07-19 10:17:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:00,243 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-07-19 10:17:00,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:17:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-07-19 10:17:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 10:17:00,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:00,244 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:00,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:00,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:00,456 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1011334033, now seen corresponding path program 8 times [2022-07-19 10:17:00,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:17:00,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593292246] [2022-07-19 10:17:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:00,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:17:00,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:17:00,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535152999] [2022-07-19 10:17:00,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:17:00,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:00,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:17:00,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:17:00,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 10:17:00,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:17:00,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:00,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 10:17:00,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:00,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:17:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:17:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593292246] [2022-07-19 10:17:00,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:17:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535152999] [2022-07-19 10:17:00,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535152999] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:17:00,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:17:00,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-19 10:17:00,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690342859] [2022-07-19 10:17:00,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:00,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 10:17:00,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:17:00,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 10:17:00,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-19 10:17:00,693 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:17:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:00,912 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2022-07-19 10:17:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 10:17:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-07-19 10:17:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:00,913 INFO L225 Difference]: With dead ends: 106 [2022-07-19 10:17:00,913 INFO L226 Difference]: Without dead ends: 102 [2022-07-19 10:17:00,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-07-19 10:17:00,914 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:00,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 155 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:17:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-19 10:17:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2022-07-19 10:17:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 10:17:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2022-07-19 10:17:00,929 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 40 [2022-07-19 10:17:00,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:00,929 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2022-07-19 10:17:00,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:17:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2022-07-19 10:17:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 10:17:00,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:00,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:00,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:01,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 10:17:01,141 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash -943992564, now seen corresponding path program 1 times [2022-07-19 10:17:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:17:01,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928016421] [2022-07-19 10:17:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:01,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:17:01,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:17:01,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584262397] [2022-07-19 10:17:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:01,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:01,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:17:01,155 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:17:01,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 10:17:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:17:01,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-19 10:17:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:01,333 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 10:17:01,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,357 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 10:17:01,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-19 10:17:01,363 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 33 treesize of output 32 [2022-07-19 10:17:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-07-19 10:17:01,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:01,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:01,515 INFO L356 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-07-19 10:17:01,515 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 7 case distinctions, treesize of input 86 treesize of output 81 [2022-07-19 10:17:01,840 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-19 10:17:01,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 112 [2022-07-19 10:17:01,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 38 treesize of output 41 [2022-07-19 10:17:01,868 INFO L356 Elim1Store]: treesize reduction 50, result has 16.7 percent of original size [2022-07-19 10:17:01,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 106 [2022-07-19 10:17:01,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:01,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 49 [2022-07-19 10:17:01,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:01,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:01,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:01,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-07-19 10:17:01,919 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 83 treesize of output 68 [2022-07-19 10:17:01,923 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 17 treesize of output 11 [2022-07-19 10:17:02,300 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-19 10:17:02,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 360 treesize of output 239 [2022-07-19 10:17:02,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 158 treesize of output 130 [2022-07-19 10:17:02,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-19 10:17:02,343 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-19 10:17:02,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 174 treesize of output 217 [2022-07-19 10:17:02,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:02,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:02,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:02,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 49 [2022-07-19 10:17:02,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:02,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:02,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 124 [2022-07-19 10:17:02,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 66 treesize of output 60 [2022-07-19 10:17:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:02,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 57 [2022-07-19 10:17:02,437 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 17 treesize of output 11 [2022-07-19 10:17:03,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:03,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:03,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:03,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:03,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:03,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:03,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:03,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:03,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:03,078 INFO L356 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-07-19 10:17:03,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 48 [2022-07-19 10:17:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:03,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:03,505 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int))) (= 0 (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_732) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_733) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)))))))) is different from false [2022-07-19 10:17:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:17:05,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928016421] [2022-07-19 10:17:05,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:17:05,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584262397] [2022-07-19 10:17:05,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584262397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:05,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 10:17:05,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-07-19 10:17:05,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387987440] [2022-07-19 10:17:05,860 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:05,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 10:17:05,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:17:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 10:17:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=876, Unknown=5, NotChecked=60, Total=1056 [2022-07-19 10:17:05,861 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:17:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:06,264 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-07-19 10:17:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 10:17:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-07-19 10:17:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:06,265 INFO L225 Difference]: With dead ends: 108 [2022-07-19 10:17:06,265 INFO L226 Difference]: Without dead ends: 96 [2022-07-19 10:17:06,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=140, Invalid=1119, Unknown=5, NotChecked=68, Total=1332 [2022-07-19 10:17:06,266 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:06,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 308 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 214 Unchecked, 0.2s Time] [2022-07-19 10:17:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-19 10:17:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2022-07-19 10:17:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 79 states have internal predecessors, (86), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 10:17:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2022-07-19 10:17:06,277 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 42 [2022-07-19 10:17:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:06,278 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2022-07-19 10:17:06,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:17:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2022-07-19 10:17:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 10:17:06,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:06,279 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:06,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:06,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:06,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:06,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1282630227, now seen corresponding path program 9 times [2022-07-19 10:17:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:17:06,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001768686] [2022-07-19 10:17:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:17:06,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:17:06,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127606800] [2022-07-19 10:17:06,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:17:06,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:17:06,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:17:06,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 10:17:06,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-07-19 10:17:06,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:06,867 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 108 conjunts are in the unsatisfiable core [2022-07-19 10:17:06,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:06,876 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 10:17:06,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:06,895 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 10:17:06,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-19 10:17:06,903 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 33 treesize of output 32 [2022-07-19 10:17:06,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:06,973 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2022-07-19 10:17:06,977 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 50 treesize of output 48 [2022-07-19 10:17:06,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:06,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 33 [2022-07-19 10:17:06,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:06,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 37 [2022-07-19 10:17:07,097 INFO L356 Elim1Store]: treesize reduction 32, result has 13.5 percent of original size [2022-07-19 10:17:07,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 82 [2022-07-19 10:17:07,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 38 treesize of output 41 [2022-07-19 10:17:07,126 INFO L356 Elim1Store]: treesize reduction 49, result has 9.3 percent of original size [2022-07-19 10:17:07,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 71 [2022-07-19 10:17:07,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-07-19 10:17:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 34 [2022-07-19 10:17:07,177 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-19 10:17:07,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 40 [2022-07-19 10:17:07,183 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 9 treesize of output 5 [2022-07-19 10:17:07,290 INFO L356 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-07-19 10:17:07,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 108 [2022-07-19 10:17:07,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 42 treesize of output 45 [2022-07-19 10:17:07,321 INFO L356 Elim1Store]: treesize reduction 46, result has 17.9 percent of original size [2022-07-19 10:17:07,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 88 [2022-07-19 10:17:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,370 INFO L356 Elim1Store]: treesize reduction 90, result has 22.4 percent of original size [2022-07-19 10:17:07,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 50 [2022-07-19 10:17:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,417 INFO L356 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2022-07-19 10:17:07,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 56 [2022-07-19 10:17:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,665 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 177 [2022-07-19 10:17:07,670 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 201 treesize of output 169 [2022-07-19 10:17:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,718 INFO L356 Elim1Store]: treesize reduction 133, result has 16.4 percent of original size [2022-07-19 10:17:07,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 166 treesize of output 137 [2022-07-19 10:17:07,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:07,759 INFO L356 Elim1Store]: treesize reduction 127, result has 17.0 percent of original size [2022-07-19 10:17:07,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 44 treesize of output 63 [2022-07-19 10:17:07,763 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 14 treesize of output 7 [2022-07-19 10:17:08,757 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-19 10:17:08,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 393 treesize of output 266 [2022-07-19 10:17:08,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 158 treesize of output 130 [2022-07-19 10:17:08,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-19 10:17:08,846 INFO L356 Elim1Store]: treesize reduction 111, result has 8.3 percent of original size [2022-07-19 10:17:08,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 212 treesize of output 253 [2022-07-19 10:17:08,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:08,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,084 INFO L356 Elim1Store]: treesize reduction 220, result has 19.4 percent of original size [2022-07-19 10:17:09,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 69 treesize of output 125 [2022-07-19 10:17:09,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:09,252 INFO L356 Elim1Store]: treesize reduction 367, result has 12.0 percent of original size [2022-07-19 10:17:09,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 124 treesize of output 228 [2022-07-19 10:17:09,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 78 treesize of output 72 [2022-07-19 10:17:09,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:17:09,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001768686] [2022-07-19 10:17:09,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:17:09,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127606800] [2022-07-19 10:17:09,369 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 10:17:09,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 10:17:09,584 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraintForOnePosition(ArrayIndexEqualityManager.java:415) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraint(ArrayIndexEqualityManager.java:449) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.constructWriteConstraints2(Elim1Store.java:975) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:314) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 10:17:09,587 INFO L158 Benchmark]: Toolchain (without parser) took 125943.32ms. Allocated memory was 107.0MB in the beginning and 327.2MB in the end (delta: 220.2MB). Free memory was 76.4MB in the beginning and 243.8MB in the end (delta: -167.4MB). Peak memory consumption was 194.3MB. Max. memory is 16.1GB. [2022-07-19 10:17:09,587 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 61.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:17:09,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.45ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 76.2MB in the beginning and 104.3MB in the end (delta: -28.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 10:17:09,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.85ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 102.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:17:09,588 INFO L158 Benchmark]: Boogie Preprocessor took 39.32ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 101.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:17:09,588 INFO L158 Benchmark]: RCFGBuilder took 300.94ms. Allocated memory is still 130.0MB. Free memory was 101.3MB in the beginning and 90.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 10:17:09,588 INFO L158 Benchmark]: TraceAbstraction took 125320.21ms. Allocated memory was 130.0MB in the beginning and 327.2MB in the end (delta: 197.1MB). Free memory was 90.0MB in the beginning and 243.8MB in the end (delta: -153.8MB). Peak memory consumption was 186.9MB. Max. memory is 16.1GB. [2022-07-19 10:17:09,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 61.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.45ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 76.2MB in the beginning and 104.3MB in the end (delta: -28.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.85ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 102.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.32ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 101.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.94ms. Allocated memory is still 130.0MB. Free memory was 101.3MB in the beginning and 90.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 125320.21ms. Allocated memory was 130.0MB in the beginning and 327.2MB in the end (delta: 197.1MB). Free memory was 90.0MB in the beginning and 243.8MB in the end (delta: -153.8MB). Peak memory consumption was 186.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b): de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-19 10:17:09,798 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-07-19 10:17:09,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/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-patterns/array6_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:17:11,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:17:11,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:17:11,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:17:11,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:17:11,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:17:11,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:17:11,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:17:11,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:17:11,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:17:11,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:17:11,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:17:11,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:17:11,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:17:11,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:17:11,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:17:11,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:17:11,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:17:11,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:17:11,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:17:11,303 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:17:11,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:17:11,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:17:11,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:17:11,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:17:11,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:17:11,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:17:11,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:17:11,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:17:11,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:17:11,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:17:11,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:17:11,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:17:11,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:17:11,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:17:11,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:17:11,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:17:11,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:17:11,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:17:11,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:17:11,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:17:11,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:17:11,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 10:17:11,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:17:11,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:17:11,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:17:11,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:17:11,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:17:11,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:17:11,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:17:11,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:17:11,350 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:17:11,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:17:11,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:17:11,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 10:17:11,355 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:17:11,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:17:11,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:17:11,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:17:11,357 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 10:17:11,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 10:17:11,357 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:17:11,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:17:11,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:17:11,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 10:17:11,357 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2022-07-19 10:17:11,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:17:11,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:17:11,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:17:11,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:17:11,645 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:17:11,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-19 10:17:11,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc4d6273/fd50e3962ea9430aac518389b8ff0cb2/FLAGdc97f072e [2022-07-19 10:17:12,006 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:17:12,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-19 10:17:12,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc4d6273/fd50e3962ea9430aac518389b8ff0cb2/FLAGdc97f072e [2022-07-19 10:17:12,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc4d6273/fd50e3962ea9430aac518389b8ff0cb2 [2022-07-19 10:17:12,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:17:12,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:17:12,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:17:12,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:17:12,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:17:12,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774053c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12, skipping insertion in model container [2022-07-19 10:17:12,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:17:12,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:17:12,558 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-patterns/array6_pattern.c[1356,1369] [2022-07-19 10:17:12,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:17:12,576 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:17:12,600 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-patterns/array6_pattern.c[1356,1369] [2022-07-19 10:17:12,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:17:12,641 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:17:12,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12 WrapperNode [2022-07-19 10:17:12,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:17:12,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:17:12,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:17:12,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:17:12,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,679 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-07-19 10:17:12,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:17:12,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:17:12,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:17:12,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:17:12,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:17:12,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:17:12,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:17:12,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:17:12,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (1/1) ... [2022-07-19 10:17:12,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:17:12,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:17:12,752 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 10:17:12,771 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 10:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 10:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 10:17:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 10:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-19 10:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:17:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-19 10:17:12,862 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:17:12,863 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:17:13,050 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:17:13,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:17:13,054 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 10:17:13,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:17:13 BoogieIcfgContainer [2022-07-19 10:17:13,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:17:13,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:17:13,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:17:13,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:17:13,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:17:12" (1/3) ... [2022-07-19 10:17:13,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67097cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:17:13, skipping insertion in model container [2022-07-19 10:17:13,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:17:12" (2/3) ... [2022-07-19 10:17:13,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67097cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:17:13, skipping insertion in model container [2022-07-19 10:17:13,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:17:13" (3/3) ... [2022-07-19 10:17:13,061 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-07-19 10:17:13,071 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:17:13,071 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:17:13,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:17:13,106 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@1750ec96, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e2106fa [2022-07-19 10:17:13,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:17:13,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:17:13,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:13,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:13,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-07-19 10:17:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:13,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371413484] [2022-07-19 10:17:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:13,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:13,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:13,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:13,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 10:17:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:17:13,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 10:17:13,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:13,235 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 10:17:13,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:17:13,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:13,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371413484] [2022-07-19 10:17:13,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371413484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:17:13,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:17:13,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:17:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130615665] [2022-07-19 10:17:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:17:13,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:17:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:13,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:17:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:17:13,265 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 10:17:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:13,287 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-07-19 10:17:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:17:13,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-19 10:17:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:13,293 INFO L225 Difference]: With dead ends: 47 [2022-07-19 10:17:13,293 INFO L226 Difference]: Without dead ends: 21 [2022-07-19 10:17:13,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:17:13,299 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 10:17:13,300 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 10:17:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-19 10:17:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-19 10:17:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-19 10:17:13,330 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-07-19 10:17:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:13,331 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-19 10:17:13,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 10:17:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-19 10:17:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:17:13,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:13,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:13,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:13,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:13,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:13,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-07-19 10:17:13,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:13,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568914022] [2022-07-19 10:17:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:13,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:13,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:13,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:13,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 10:17:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:17:13,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 10:17:13,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:17:13,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:17:13,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568914022] [2022-07-19 10:17:13,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568914022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:17:13,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:17:13,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:17:13,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909796181] [2022-07-19 10:17:13,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:17:13,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:17:13,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:13,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:17:13,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:17:13,701 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:13,731 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-19 10:17:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:17:13,731 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-19 10:17:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:13,733 INFO L225 Difference]: With dead ends: 26 [2022-07-19 10:17:13,733 INFO L226 Difference]: Without dead ends: 22 [2022-07-19 10:17:13,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:17:13,735 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:13,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:17:13,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-19 10:17:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-19 10:17:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-19 10:17:13,748 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-07-19 10:17:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:13,749 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-19 10:17:13,749 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-19 10:17:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 10:17:13,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:13,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:13,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:13,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:13,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-07-19 10:17:13,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359890609] [2022-07-19 10:17:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:13,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:13,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:13,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 10:17:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:17:14,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:17:14,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 10:17:14,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:17:14,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:14,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359890609] [2022-07-19 10:17:14,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359890609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:17:14,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:17:14,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 10:17:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244845236] [2022-07-19 10:17:14,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:17:14,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 10:17:14,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:14,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 10:17:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 10:17:14,145 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:14,150 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-07-19 10:17:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 10:17:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-07-19 10:17:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:14,151 INFO L225 Difference]: With dead ends: 43 [2022-07-19 10:17:14,151 INFO L226 Difference]: Without dead ends: 27 [2022-07-19 10:17:14,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 10:17:14,152 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:14,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-07-19 10:17:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-19 10:17:14,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-19 10:17:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-07-19 10:17:14,156 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2022-07-19 10:17:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:14,157 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-07-19 10:17:14,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-07-19 10:17:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 10:17:14,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:14,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:14,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:14,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-07-19 10:17:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:14,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158167489] [2022-07-19 10:17:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:14,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:14,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:14,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 10:17:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:17:14,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 10:17:14,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 10:17:14,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:14,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:14,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158167489] [2022-07-19 10:17:14,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158167489] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:14,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1686087431] [2022-07-19 10:17:14,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:14,899 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-19 10:17:14,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-19 10:17:14,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-19 10:17:14,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-07-19 10:17:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:17:15,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 10:17:15,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 10:17:15,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:15,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1686087431] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:15,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:17:15,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2022-07-19 10:17:15,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282795034] [2022-07-19 10:17:15,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:15,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 10:17:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:15,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 10:17:15,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-19 10:17:15,269 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:17:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:15,277 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2022-07-19 10:17:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 10:17:15,277 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-07-19 10:17:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:15,278 INFO L225 Difference]: With dead ends: 51 [2022-07-19 10:17:15,278 INFO L226 Difference]: Without dead ends: 29 [2022-07-19 10:17:15,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-19 10:17:15,279 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:15,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-07-19 10:17:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-19 10:17:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-19 10:17:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-07-19 10:17:15,283 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2022-07-19 10:17:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:15,283 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-07-19 10:17:15,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 10:17:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-07-19 10:17:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 10:17:15,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:15,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:15,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:15,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:15,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-19 10:17:15,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash -178408891, now seen corresponding path program 2 times [2022-07-19 10:17:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:15,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357160787] [2022-07-19 10:17:15,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:17:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:15,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:15,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 10:17:15,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:17:15,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:15,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 10:17:15,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:16,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:17:16,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:16,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357160787] [2022-07-19 10:17:16,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357160787] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:17:16,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:17:16,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-07-19 10:17:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181525993] [2022-07-19 10:17:16,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:16,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 10:17:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:16,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 10:17:16,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-07-19 10:17:16,320 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:16,449 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-07-19 10:17:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 10:17:16,450 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2022-07-19 10:17:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:16,451 INFO L225 Difference]: With dead ends: 49 [2022-07-19 10:17:16,451 INFO L226 Difference]: Without dead ends: 45 [2022-07-19 10:17:16,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-07-19 10:17:16,452 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:16,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 101 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-07-19 10:17:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-07-19 10:17:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2022-07-19 10:17:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-07-19 10:17:16,456 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2022-07-19 10:17:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:16,456 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-07-19 10:17:16,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:16,457 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-07-19 10:17:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 10:17:16,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:16,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:16,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-19 10:17:16,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:16,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:16,666 INFO L85 PathProgramCache]: Analyzing trace with hash 400980999, now seen corresponding path program 3 times [2022-07-19 10:17:16,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:16,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701095636] [2022-07-19 10:17:16,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:17:16,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:16,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:16,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:16,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-19 10:17:16,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 10:17:16,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:16,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 10:17:16,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:17:17,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:17,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:17,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701095636] [2022-07-19 10:17:17,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701095636] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:17,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101805082] [2022-07-19 10:17:17,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:17:17,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-19 10:17:17,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-19 10:17:17,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-19 10:17:17,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-07-19 10:17:17,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 10:17:17,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:17,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 10:17:17,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 10:17:17,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 10:17:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2101805082] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:17:18,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:17:18,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 10] total 20 [2022-07-19 10:17:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9050446] [2022-07-19 10:17:18,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:18,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 10:17:18,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 10:17:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2022-07-19 10:17:18,316 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 10:17:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:18,472 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-19 10:17:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 10:17:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2022-07-19 10:17:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:18,474 INFO L225 Difference]: With dead ends: 39 [2022-07-19 10:17:18,474 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 10:17:18,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2022-07-19 10:17:18,475 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:18,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 62 Unchecked, 0.0s Time] [2022-07-19 10:17:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 10:17:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-07-19 10:17:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-07-19 10:17:18,479 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2022-07-19 10:17:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:18,479 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-07-19 10:17:18,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 10:17:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-07-19 10:17:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-19 10:17:18,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:18,480 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:18,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:18,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:18,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1151083191, now seen corresponding path program 4 times [2022-07-19 10:17:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:18,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311837463] [2022-07-19 10:17:18,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:17:18,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:18,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:18,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:18,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-19 10:17:19,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:17:19,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:19,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 10:17:19,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 10:17:19,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:19,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:19,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311837463] [2022-07-19 10:17:19,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311837463] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:19,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [640089856] [2022-07-19 10:17:19,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:17:19,393 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-19 10:17:19,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-19 10:17:19,394 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-19 10:17:19,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-07-19 10:17:19,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:17:19,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:19,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 10:17:19,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:19,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:17:20,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [640089856] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:17:20,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:17:20,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 25 [2022-07-19 10:17:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031840261] [2022-07-19 10:17:20,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 10:17:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 10:17:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2022-07-19 10:17:20,076 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 10:17:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:20,408 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-07-19 10:17:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 10:17:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 32 [2022-07-19 10:17:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:20,413 INFO L225 Difference]: With dead ends: 61 [2022-07-19 10:17:20,413 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 10:17:20,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2022-07-19 10:17:20,416 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:20,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 135 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 41 Invalid, 0 Unknown, 33 Unchecked, 0.2s Time] [2022-07-19 10:17:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 10:17:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-19 10:17:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:17:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-19 10:17:20,420 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2022-07-19 10:17:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:20,420 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-19 10:17:20,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 10:17:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-19 10:17:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 10:17:20,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:20,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:20,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-07-19 10:17:20,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-19 10:17:20,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:20,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 5 times [2022-07-19 10:17:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451180170] [2022-07-19 10:17:20,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:17:20,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:20,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:20,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:20,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-19 10:17:21,123 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-19 10:17:21,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:21,143 WARN L261 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-19 10:17:21,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:21,215 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 10:17:21,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,282 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 10:17:21,290 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 34 treesize of output 34 [2022-07-19 10:17:21,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-07-19 10:17:21,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-19 10:17:21,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2022-07-19 10:17:21,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:21,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-07-19 10:17:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:22,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:22,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:22,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:22,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:22,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:22,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:22,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:22,633 INFO L356 Elim1Store]: treesize reduction 131, result has 9.7 percent of original size [2022-07-19 10:17:22,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 152 treesize of output 130 [2022-07-19 10:17:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:24,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:24,082 INFO L356 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2022-07-19 10:17:24,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 108 treesize of output 50 [2022-07-19 10:17:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:24,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:30,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:30,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451180170] [2022-07-19 10:17:30,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451180170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:30,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1211592682] [2022-07-19 10:17:30,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:17:30,128 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-19 10:17:30,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-19 10:17:30,130 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-19 10:17:30,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-07-19 10:17:30,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-19 10:17:30,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:30,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-19 10:17:30,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:30,648 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 10:17:30,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:30,760 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 10:17:30,764 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 34 treesize of output 34 [2022-07-19 10:17:30,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-19 10:17:30,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-07-19 10:17:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:31,525 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 61 [2022-07-19 10:17:31,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:31,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 33 [2022-07-19 10:17:31,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:31,540 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 50 treesize of output 52 [2022-07-19 10:17:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:32,106 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2022-07-19 10:17:32,115 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 37 treesize of output 35 [2022-07-19 10:17:32,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:32,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2022-07-19 10:17:32,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:32,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 24 [2022-07-19 10:17:34,365 INFO L356 Elim1Store]: treesize reduction 49, result has 9.3 percent of original size [2022-07-19 10:17:34,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 345 treesize of output 221 [2022-07-19 10:17:34,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 170 treesize of output 138 [2022-07-19 10:17:34,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 161 [2022-07-19 10:17:34,462 INFO L356 Elim1Store]: treesize reduction 121, result has 4.0 percent of original size [2022-07-19 10:17:34,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 185 treesize of output 228 [2022-07-19 10:17:34,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:34,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 134 [2022-07-19 10:17:34,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:34,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:34,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:34,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 47 [2022-07-19 10:17:34,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-19 10:17:34,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 70 treesize of output 66 [2022-07-19 10:17:34,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 12 [2022-07-19 10:17:35,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:35,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:35,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:35,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:35,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:35,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:35,633 INFO L356 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2022-07-19 10:17:35,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 108 treesize of output 50 [2022-07-19 10:17:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:35,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:35,885 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_302 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd ((_ sign_extend 32) (_ bv4294967294 32)) ((_ sign_extend 32) (_ bv2 32))) (let ((.cse3 (bvmul ((_ sign_extend 16) |c_ULTIMATE.start_main_~index~0#1|) (_ bv4 32)))) (let ((.cse0 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_302) |c_ULTIMATE.start_main_~#array2~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (bvadd (select .cse4 (bvadd (_ bv4294967292 32) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3))))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (bvadd |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (bvadd (select .cse2 (bvadd (_ bv4294967292 32) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3)) (select .cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (bvadd ((_ sign_extend 32) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) ((_ sign_extend 32) (select .cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) ((_ sign_extend 32) (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) ((_ sign_extend 32) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) ((_ sign_extend 32) (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) ((_ sign_extend 32) (select .cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) |c_ULTIMATE.start_main_~sum~0#1|)))))) is different from false [2022-07-19 10:17:39,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1211592682] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:39,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:17:39,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 33 [2022-07-19 10:17:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923804377] [2022-07-19 10:17:39,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:39,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-19 10:17:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-19 10:17:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1625, Unknown=9, NotChecked=82, Total=1892 [2022-07-19 10:17:39,994 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 29 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:40,390 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-07-19 10:17:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 10:17:40,391 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 29 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-07-19 10:17:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:40,392 INFO L225 Difference]: With dead ends: 59 [2022-07-19 10:17:40,392 INFO L226 Difference]: Without dead ends: 55 [2022-07-19 10:17:40,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=176, Invalid=1625, Unknown=9, NotChecked=82, Total=1892 [2022-07-19 10:17:40,393 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:40,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 263 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 115 Unchecked, 0.4s Time] [2022-07-19 10:17:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-19 10:17:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2022-07-19 10:17:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 10:17:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-07-19 10:17:40,402 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2022-07-19 10:17:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:40,403 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-07-19 10:17:40,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 29 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-07-19 10:17:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 10:17:40,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:40,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:40,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:40,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:40,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:40,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:40,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 6 times [2022-07-19 10:17:40,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:40,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488000095] [2022-07-19 10:17:40,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 10:17:40,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:40,810 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:40,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-19 10:17:41,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-19 10:17:41,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-19 10:17:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:41,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:17:42,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:42,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488000095] [2022-07-19 10:17:42,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488000095] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:17:42,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:17:42,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 30 [2022-07-19 10:17:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701522026] [2022-07-19 10:17:42,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:42,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 10:17:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 10:17:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2022-07-19 10:17:42,386 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 30 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:43,999 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2022-07-19 10:17:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-19 10:17:44,000 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-07-19 10:17:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:44,000 INFO L225 Difference]: With dead ends: 119 [2022-07-19 10:17:44,000 INFO L226 Difference]: Without dead ends: 105 [2022-07-19 10:17:44,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=543, Invalid=1809, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 10:17:44,002 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 176 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:44,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 298 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 171 Invalid, 0 Unknown, 156 Unchecked, 0.5s Time] [2022-07-19 10:17:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-19 10:17:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2022-07-19 10:17:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 69 states have (on average 1.144927536231884) internal successors, (79), 69 states have internal predecessors, (79), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 10:17:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2022-07-19 10:17:44,013 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 36 [2022-07-19 10:17:44,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:44,013 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2022-07-19 10:17:44,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 29 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2022-07-19 10:17:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 10:17:44,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:44,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:44,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:44,220 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 7 times [2022-07-19 10:17:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492547204] [2022-07-19 10:17:44,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-19 10:17:44,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:44,222 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:44,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-19 10:17:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:17:44,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 10:17:44,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:17:44,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:17:45,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:17:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492547204] [2022-07-19 10:17:45,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492547204] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:17:45,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:17:45,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2022-07-19 10:17:45,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552026831] [2022-07-19 10:17:45,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-19 10:17:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 10:17:45,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-19 10:17:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2022-07-19 10:17:45,870 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 32 states, 32 states have (on average 1.78125) internal successors, (57), 31 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:49,053 INFO L93 Difference]: Finished difference Result 134 states and 151 transitions. [2022-07-19 10:17:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 10:17:49,054 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 31 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-07-19 10:17:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:49,055 INFO L225 Difference]: With dead ends: 134 [2022-07-19 10:17:49,055 INFO L226 Difference]: Without dead ends: 130 [2022-07-19 10:17:49,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=551, Invalid=1899, Unknown=0, NotChecked=0, Total=2450 [2022-07-19 10:17:49,056 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 144 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:49,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 276 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 105 Invalid, 0 Unknown, 280 Unchecked, 1.1s Time] [2022-07-19 10:17:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-19 10:17:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 93. [2022-07-19 10:17:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.1625) internal successors, (93), 80 states have internal predecessors, (93), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 10:17:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2022-07-19 10:17:49,081 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 36 [2022-07-19 10:17:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:49,081 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2022-07-19 10:17:49,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 31 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:17:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2022-07-19 10:17:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 10:17:49,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:49,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:17:49,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:49,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:17:49,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:49,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 8 times [2022-07-19 10:17:49,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 10:17:49,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002764326] [2022-07-19 10:17:49,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:17:49,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 10:17:49,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 10:17:49,288 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 10:17:49,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-19 10:17:49,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:17:49,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:49,580 WARN L261 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-19 10:17:49,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:49,650 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 10:17:49,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:49,707 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 49 treesize of output 29 [2022-07-19 10:17:49,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:49,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:49,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:49,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-07-19 10:17:50,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:50,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:50,400 INFO L356 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2022-07-19 10:17:50,400 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 7 case distinctions, treesize of input 84 treesize of output 74 [2022-07-19 10:17:50,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:50,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:50,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:50,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:50,817 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-07-19 10:17:50,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 84 treesize of output 87 [2022-07-19 10:17:51,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:51,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:51,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:51,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:51,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:51,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:52,148 INFO L356 Elim1Store]: treesize reduction 975, result has 10.2 percent of original size [2022-07-19 10:17:52,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 12 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 73 case distinctions, treesize of input 183 treesize of output 221 [2022-07-19 10:18:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:01,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:18:01,958 INFO L356 Elim1Store]: treesize reduction 582, result has 27.2 percent of original size [2022-07-19 10:18:01,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 12 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 187 treesize of output 309 [2022-07-19 10:18:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:18:03,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:18:19,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 10:18:19,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002764326] [2022-07-19 10:18:19,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002764326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:18:19,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2036589664] [2022-07-19 10:18:19,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:18:19,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-19 10:18:19,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-19 10:18:19,772 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-19 10:18:19,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-07-19 10:18:20,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:18:20,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:18:20,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-19 10:18:20,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:18:20,514 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 10:18:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:20,703 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 10:18:20,708 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 34 treesize of output 34 [2022-07-19 10:18:20,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-07-19 10:18:20,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-19 10:18:20,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:20,976 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-07-19 10:18:20,980 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 41 treesize of output 39 [2022-07-19 10:18:20,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:20,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 24 [2022-07-19 10:18:20,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:20,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 26 [2022-07-19 10:18:21,318 INFO L356 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-07-19 10:18:21,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 88 [2022-07-19 10:18:21,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 42 treesize of output 45 [2022-07-19 10:18:21,346 INFO L356 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-07-19 10:18:21,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 75 [2022-07-19 10:18:21,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-07-19 10:18:21,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 40 [2022-07-19 10:18:21,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2022-07-19 10:18:21,414 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 11 treesize of output 5 [2022-07-19 10:18:21,930 INFO L356 Elim1Store]: treesize reduction 30, result has 14.3 percent of original size [2022-07-19 10:18:21,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 96 [2022-07-19 10:18:21,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 42 treesize of output 45 [2022-07-19 10:18:21,986 INFO L356 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-07-19 10:18:21,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 78 [2022-07-19 10:18:21,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:21,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:22,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 48 [2022-07-19 10:18:22,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:22,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:22,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:22,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:22,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:22,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:22,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-07-19 10:18:22,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2022-07-19 10:18:22,115 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 11 treesize of output 5 [2022-07-19 10:18:25,146 INFO L356 Elim1Store]: treesize reduction 49, result has 9.3 percent of original size [2022-07-19 10:18:25,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 385 treesize of output 253 [2022-07-19 10:18:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 170 treesize of output 138 [2022-07-19 10:18:25,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 161 [2022-07-19 10:18:25,293 INFO L356 Elim1Store]: treesize reduction 121, result has 4.0 percent of original size [2022-07-19 10:18:25,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 207 treesize of output 246 [2022-07-19 10:18:25,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,535 INFO L356 Elim1Store]: treesize reduction 226, result has 9.2 percent of original size [2022-07-19 10:18:25,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 116 treesize of output 198 [2022-07-19 10:18:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:18:25,760 INFO L356 Elim1Store]: treesize reduction 121, result has 18.8 percent of original size [2022-07-19 10:18:25,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 96 [2022-07-19 10:18:25,900 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-19 10:18:28,385 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 10:18:28,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-07-19 10:18:28,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-19 10:18:28,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 10:18:28,786 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @2a551a63) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraintForOnePosition(ArrayIndexEqualityManager.java:415) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraint(ArrayIndexEqualityManager.java:449) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.constructWriteConstraints2(Elim1Store.java:975) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:314) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 10:18:28,790 INFO L158 Benchmark]: Toolchain (without parser) took 76347.80ms. Allocated memory was 52.4MB in the beginning and 79.7MB in the end (delta: 27.3MB). Free memory was 29.6MB in the beginning and 34.4MB in the end (delta: -4.7MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2022-07-19 10:18:28,790 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:18:28,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.76ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.5MB in the beginning and 47.8MB in the end (delta: -18.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-19 10:18:28,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.92ms. Allocated memory is still 65.0MB. Free memory was 47.8MB in the beginning and 46.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:18:28,792 INFO L158 Benchmark]: Boogie Preprocessor took 39.97ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 44.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:18:28,792 INFO L158 Benchmark]: RCFGBuilder took 335.20ms. Allocated memory is still 65.0MB. Free memory was 44.6MB in the beginning and 46.1MB in the end (delta: -1.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-07-19 10:18:28,792 INFO L158 Benchmark]: TraceAbstraction took 75732.75ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.6MB in the beginning and 34.4MB in the end (delta: 11.3MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-07-19 10:18:28,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.76ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.5MB in the beginning and 47.8MB in the end (delta: -18.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.92ms. Allocated memory is still 65.0MB. Free memory was 47.8MB in the beginning and 46.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.97ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 44.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 335.20ms. Allocated memory is still 65.0MB. Free memory was 44.6MB in the beginning and 46.1MB in the end (delta: -1.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 75732.75ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.6MB in the beginning and 34.4MB in the end (delta: 11.3MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @2a551a63) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @2a551a63): de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-19 10:18:28,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @2a551a63)