./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array23_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/array23_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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 08:20:40,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 08:20:40,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 08:20:40,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 08:20:40,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 08:20:40,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 08:20:40,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 08:20:40,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 08:20:40,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 08:20:40,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 08:20:40,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 08:20:40,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 08:20:40,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 08:20:40,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 08:20:40,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 08:20:40,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 08:20:40,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 08:20:40,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 08:20:40,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 08:20:40,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 08:20:40,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 08:20:40,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 08:20:40,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 08:20:40,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 08:20:40,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 08:20:40,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 08:20:40,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 08:20:40,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 08:20:40,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 08:20:40,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 08:20:40,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 08:20:40,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 08:20:40,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 08:20:40,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 08:20:40,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 08:20:40,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 08:20:40,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 08:20:40,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 08:20:40,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 08:20:40,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 08:20:40,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 08:20:40,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 08:20:40,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 08:20:40,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 08:20:40,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 08:20:40,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 08:20:40,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 08:20:40,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 08:20:40,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 08:20:40,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 08:20:40,423 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 08:20:40,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 08:20:40,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 08:20:40,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 08:20:40,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 08:20:40,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 08:20:40,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 08:20:40,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 08:20:40,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 08:20:40,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 08:20:40,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 08:20:40,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 08:20:40,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 08:20:40,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 08:20:40,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 08:20:40,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 08:20:40,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:20:40,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 08:20:40,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 08:20:40,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 08:20:40,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 08:20:40,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 08:20:40,429 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 08:20:40,429 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 08:20:40,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 08:20:40,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 08:20:40,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2021-12-22 08:20:40,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 08:20:40,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 08:20:40,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 08:20:40,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 08:20:40,646 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 08:20:40,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array23_pattern.c [2021-12-22 08:20:40,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7732dd29/fdb7dd25ef83494c8c2d62580b17aa70/FLAG655991edc [2021-12-22 08:20:40,998 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 08:20:40,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array23_pattern.c [2021-12-22 08:20:41,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7732dd29/fdb7dd25ef83494c8c2d62580b17aa70/FLAG655991edc [2021-12-22 08:20:41,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7732dd29/fdb7dd25ef83494c8c2d62580b17aa70 [2021-12-22 08:20:41,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 08:20:41,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 08:20:41,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 08:20:41,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 08:20:41,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 08:20:41,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c442368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41, skipping insertion in model container [2021-12-22 08:20:41,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 08:20:41,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 08:20:41,595 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/array23_pattern.c[1347,1360] [2021-12-22 08:20:41,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:20:41,616 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 08:20:41,624 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/array23_pattern.c[1347,1360] [2021-12-22 08:20:41,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:20:41,647 INFO L208 MainTranslator]: Completed translation [2021-12-22 08:20:41,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41 WrapperNode [2021-12-22 08:20:41,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 08:20:41,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 08:20:41,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 08:20:41,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 08:20:41,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,674 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2021-12-22 08:20:41,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 08:20:41,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 08:20:41,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 08:20:41,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 08:20:41,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 08:20:41,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 08:20:41,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 08:20:41,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 08:20:41,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (1/1) ... [2021-12-22 08:20:41,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:20:41,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:20:41,763 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) [2021-12-22 08:20:41,774 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 [2021-12-22 08:20:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-12-22 08:20:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-12-22 08:20:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 08:20:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 08:20:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 08:20:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 08:20:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 08:20:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 08:20:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 08:20:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 08:20:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 08:20:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 08:20:41,900 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 08:20:41,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 08:20:42,138 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 08:20:42,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 08:20:42,146 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-22 08:20:42,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:20:42 BoogieIcfgContainer [2021-12-22 08:20:42,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 08:20:42,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 08:20:42,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 08:20:42,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 08:20:42,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:20:41" (1/3) ... [2021-12-22 08:20:42,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd97fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:20:42, skipping insertion in model container [2021-12-22 08:20:42,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:41" (2/3) ... [2021-12-22 08:20:42,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd97fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:20:42, skipping insertion in model container [2021-12-22 08:20:42,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:20:42" (3/3) ... [2021-12-22 08:20:42,157 INFO L111 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2021-12-22 08:20:42,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 08:20:42,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 08:20:42,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 08:20:42,220 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 08:20:42,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 08:20:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 08:20:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 08:20:42,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:20:42,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:20:42,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:20:42,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:20:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2021-12-22 08:20:42,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:20:42,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999268823] [2021-12-22 08:20:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:42,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:20:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:20:42,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 08:20:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:20:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:20:42,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:20:42,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999268823] [2021-12-22 08:20:42,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999268823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:20:42,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:20:42,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:20:42,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194294333] [2021-12-22 08:20:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:20:42,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 08:20:42,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:20:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 08:20:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 08:20:42,447 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2021-12-22 08:20:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:20:42,469 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2021-12-22 08:20:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 08:20:42,470 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 [2021-12-22 08:20:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:20:42,475 INFO L225 Difference]: With dead ends: 79 [2021-12-22 08:20:42,475 INFO L226 Difference]: Without dead ends: 37 [2021-12-22 08:20:42,478 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:20:42,480 INFO L933 BasicCegarLoop]: 51 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, 51 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 [2021-12-22 08:20:42,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:20:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-22 08:20:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-22 08:20:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 08:20:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-12-22 08:20:42,520 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2021-12-22 08:20:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:20:42,520 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-12-22 08:20:42,520 INFO L471 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) [2021-12-22 08:20:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-12-22 08:20:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 08:20:42,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:20:42,522 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:20:42,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 08:20:42,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:20:42,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:20:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2021-12-22 08:20:42,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:20:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550007053] [2021-12-22 08:20:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:42,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:20:42,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 08:20:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539159538] [2021-12-22 08:20:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:42,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:42,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:20:42,543 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) [2021-12-22 08:20:42,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 08:20:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:20:42,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 08:20:42,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:20:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:20:42,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:20:42,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:20:42,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550007053] [2021-12-22 08:20:42,790 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 08:20:42,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539159538] [2021-12-22 08:20:42,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539159538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:20:42,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:20:42,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:20:42,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815320198] [2021-12-22 08:20:42,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:20:42,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:20:42,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:20:42,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:20:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:20:42,804 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 08:20:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:20:42,832 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-12-22 08:20:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:20:42,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-22 08:20:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:20:42,834 INFO L225 Difference]: With dead ends: 44 [2021-12-22 08:20:42,834 INFO L226 Difference]: Without dead ends: 40 [2021-12-22 08:20:42,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:20:42,835 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 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 [2021-12-22 08:20:42,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:20:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-22 08:20:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-22 08:20:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 08:20:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-12-22 08:20:42,842 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2021-12-22 08:20:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:20:42,843 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-12-22 08:20:42,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 08:20:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2021-12-22 08:20:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 08:20:42,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:20:42,845 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:20:42,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 08:20:43,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:43,051 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:20:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:20:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2021-12-22 08:20:43,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:20:43,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369620734] [2021-12-22 08:20:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:43,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:20:43,069 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 08:20:43,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262555586] [2021-12-22 08:20:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:43,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:43,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:20:43,079 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) [2021-12-22 08:20:43,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 08:20:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:20:43,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 08:20:43,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:20:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 08:20:43,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:20:43,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:20:43,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369620734] [2021-12-22 08:20:43,289 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 08:20:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262555586] [2021-12-22 08:20:43,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262555586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:20:43,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:20:43,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:20:43,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134513887] [2021-12-22 08:20:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:20:43,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:20:43,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:20:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:20:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:20:43,306 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 08:20:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:20:43,419 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-12-22 08:20:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:20:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2021-12-22 08:20:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:20:43,422 INFO L225 Difference]: With dead ends: 83 [2021-12-22 08:20:43,422 INFO L226 Difference]: Without dead ends: 50 [2021-12-22 08:20:43,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:20:43,423 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:20:43,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 128 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:20:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-22 08:20:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-12-22 08:20:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 08:20:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-12-22 08:20:43,430 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2021-12-22 08:20:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:20:43,431 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-12-22 08:20:43,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 08:20:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-12-22 08:20:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 08:20:43,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:20:43,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:20:43,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 08:20:43,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-22 08:20:43,648 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:20:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:20:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2021-12-22 08:20:43,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:20:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203437322] [2021-12-22 08:20:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:43,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:20:43,678 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 08:20:43,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412510199] [2021-12-22 08:20:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:43,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:43,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:20:43,687 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) [2021-12-22 08:20:43,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 08:20:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:20:43,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 08:20:43,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:20:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 08:20:43,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:20:43,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:20:43,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203437322] [2021-12-22 08:20:43,849 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 08:20:43,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412510199] [2021-12-22 08:20:43,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412510199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:20:43,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:20:43,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:20:43,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312587539] [2021-12-22 08:20:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:20:43,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:20:43,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:20:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:20:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:20:43,852 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 08:20:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:20:43,895 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2021-12-22 08:20:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:20:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2021-12-22 08:20:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:20:43,899 INFO L225 Difference]: With dead ends: 80 [2021-12-22 08:20:43,899 INFO L226 Difference]: Without dead ends: 44 [2021-12-22 08:20:43,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:20:43,904 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:20:43,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 77 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:20:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-22 08:20:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-12-22 08:20:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 08:20:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-12-22 08:20:43,921 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2021-12-22 08:20:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:20:43,922 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-12-22 08:20:43,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 08:20:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-12-22 08:20:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:20:43,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:20:43,925 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:20:43,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 08:20:44,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:44,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:20:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:20:44,145 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2021-12-22 08:20:44,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:20:44,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726535359] [2021-12-22 08:20:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:44,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:20:44,177 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 08:20:44,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116645153] [2021-12-22 08:20:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:44,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:44,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:20:44,196 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) [2021-12-22 08:20:44,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 08:20:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:20:44,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 08:20:44,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:20:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 08:20:44,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 08:20:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 08:20:44,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:20:44,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726535359] [2021-12-22 08:20:44,537 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 08:20:44,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116645153] [2021-12-22 08:20:44,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116645153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 08:20:44,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 08:20:44,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-12-22 08:20:44,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135884820] [2021-12-22 08:20:44,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 08:20:44,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 08:20:44,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:20:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 08:20:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:20:44,539 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 08:20:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:20:44,658 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2021-12-22 08:20:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:20:44,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2021-12-22 08:20:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:20:44,659 INFO L225 Difference]: With dead ends: 87 [2021-12-22 08:20:44,659 INFO L226 Difference]: Without dead ends: 51 [2021-12-22 08:20:44,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:20:44,661 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:20:44,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 92 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:20:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-22 08:20:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-12-22 08:20:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 08:20:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-12-22 08:20:44,667 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2021-12-22 08:20:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:20:44,668 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-12-22 08:20:44,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 08:20:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-12-22 08:20:44,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 08:20:44,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:20:44,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:20:44,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 08:20:44,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:44,871 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:20:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:20:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2021-12-22 08:20:44,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:20:44,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276992558] [2021-12-22 08:20:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:44,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:20:44,884 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 08:20:44,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483367299] [2021-12-22 08:20:44,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 08:20:44,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:20:44,886 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) [2021-12-22 08:20:44,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 08:20:44,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 08:20:44,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 08:20:44,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 08:20:44,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:20:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 08:20:45,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 08:20:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-22 08:20:45,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:20:45,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276992558] [2021-12-22 08:20:45,199 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 08:20:45,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483367299] [2021-12-22 08:20:45,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483367299] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 08:20:45,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 08:20:45,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-22 08:20:45,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048206041] [2021-12-22 08:20:45,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 08:20:45,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 08:20:45,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:20:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 08:20:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:20:45,202 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 08:20:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:20:45,360 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2021-12-22 08:20:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 08:20:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2021-12-22 08:20:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:20:45,362 INFO L225 Difference]: With dead ends: 108 [2021-12-22 08:20:45,362 INFO L226 Difference]: Without dead ends: 75 [2021-12-22 08:20:45,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-22 08:20:45,363 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:20:45,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 151 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:20:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-22 08:20:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-12-22 08:20:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 08:20:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-12-22 08:20:45,371 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2021-12-22 08:20:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:20:45,372 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-12-22 08:20:45,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 08:20:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-12-22 08:20:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 08:20:45,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:20:45,373 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:20:45,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 08:20:45,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:45,591 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:20:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:20:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2021-12-22 08:20:45,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:20:45,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113124342] [2021-12-22 08:20:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:20:45,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:20:45,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 08:20:45,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520069391] [2021-12-22 08:20:45,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 08:20:45,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:20:45,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:20:45,606 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) [2021-12-22 08:20:45,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 08:20:46,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-22 08:20:46,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 08:20:46,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-22 08:20:46,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:20:46,616 INFO L387 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 61 treesize of output 56 [2021-12-22 08:20:46,622 INFO L387 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 19 treesize of output 18 [2021-12-22 08:20:46,630 INFO L387 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 21 treesize of output 20 [2021-12-22 08:20:46,739 INFO L387 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 74 treesize of output 67 [2021-12-22 08:20:46,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:46,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:46,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 08:20:46,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 90 [2021-12-22 08:20:46,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:46,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:46,792 INFO L387 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 32 treesize of output 7 [2021-12-22 08:20:46,999 INFO L387 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 77 treesize of output 68 [2021-12-22 08:20:47,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 89 [2021-12-22 08:20:47,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:47,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 48 treesize of output 23 [2021-12-22 08:20:47,201 INFO L387 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 96 treesize of output 85 [2021-12-22 08:20:47,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 126 [2021-12-22 08:20:47,230 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:47,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 39 [2021-12-22 08:20:48,402 INFO L387 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 108 treesize of output 95 [2021-12-22 08:20:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,557 INFO L353 Elim1Store]: treesize reduction 187, result has 44.2 percent of original size [2021-12-22 08:20:48,558 INFO L387 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 245 [2021-12-22 08:20:48,631 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:48,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:48,724 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 08:20:48,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 130 [2021-12-22 08:20:56,256 INFO L387 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 298 treesize of output 279 [2021-12-22 08:20:56,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:56,785 INFO L353 Elim1Store]: treesize reduction 294, result has 41.0 percent of original size [2021-12-22 08:20:56,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 25 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 282 treesize of output 614 [2021-12-22 08:20:57,034 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:57,137 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:57,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:57,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:57,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:57,794 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-22 08:20:58,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,699 INFO L353 Elim1Store]: treesize reduction 79, result has 47.3 percent of original size [2021-12-22 08:20:58,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 413 treesize of output 398 [2021-12-22 08:20:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:58,952 INFO L353 Elim1Store]: treesize reduction 91, result has 1.1 percent of original size [2021-12-22 08:20:58,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 327 treesize of output 253 [2021-12-22 08:20:59,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:20:59,176 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 08:20:59,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 312 [2021-12-22 08:21:11,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 08:21:11,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 08:21:11,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 08:21:11,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 08:21:11,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 08:21:11,768 INFO L353 Elim1Store]: treesize reduction 198, result has 56.9 percent of original size [2021-12-22 08:21:11,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 13 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 272 treesize of output 320 [2021-12-22 08:21:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 08:21:13,291 INFO L328 TraceCheckSpWp]: Computing backward predicates...