./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/vogal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/loops/vogal-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:49:38,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:49:38,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:49:38,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:49:38,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:49:38,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:49:38,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:49:38,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:49:38,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:49:38,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:49:38,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:49:38,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:49:38,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:49:38,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:49:38,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:49:38,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:49:38,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:49:38,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:49:38,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:49:38,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:49:38,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:49:38,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:49:38,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:49:38,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:49:38,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:49:38,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:49:38,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:49:38,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:49:38,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:49:38,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:49:38,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:49:38,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:49:38,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:49:38,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:49:38,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:49:38,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:49:38,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:49:38,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:49:38,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:49:38,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:49:38,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:49:38,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:49:38,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:49:38,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:49:38,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:49:38,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:49:38,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:49:38,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:49:38,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:49:38,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:49:38,657 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:49:38,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:49:38,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:49:38,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:49:38,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:49:38,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:49:38,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:49:38,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:49:38,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:49:38,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:49:38,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:49:38,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:49:38,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:49:38,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:49:38,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:49:38,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:49:38,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:49:38,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:49:38,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:49:38,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:49:38,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:49:38,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:49:38,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:49:38,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:49:38,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:49:38,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:49:38,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 [2021-12-15 10:49:38,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:49:38,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:49:38,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:49:38,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:49:38,864 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:49:38,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/vogal-2.i [2021-12-15 10:49:38,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbc8680b/817340f8e6ce4203a7323d662542f252/FLAGccd8882ec [2021-12-15 10:49:39,278 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:49:39,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/vogal-2.i [2021-12-15 10:49:39,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbc8680b/817340f8e6ce4203a7323d662542f252/FLAGccd8882ec [2021-12-15 10:49:39,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbc8680b/817340f8e6ce4203a7323d662542f252 [2021-12-15 10:49:39,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:49:39,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:49:39,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:49:39,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:49:39,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:49:39,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e56d1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39, skipping insertion in model container [2021-12-15 10:49:39,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:49:39,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:49:39,428 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/loops/vogal-2.i[808,821] [2021-12-15 10:49:39,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:49:39,451 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:49:39,459 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/loops/vogal-2.i[808,821] [2021-12-15 10:49:39,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:49:39,473 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:49:39,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39 WrapperNode [2021-12-15 10:49:39,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:49:39,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:49:39,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:49:39,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:49:39,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,497 INFO L137 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2021-12-15 10:49:39,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:49:39,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:49:39,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:49:39,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:49:39,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:49:39,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:49:39,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:49:39,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:49:39,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (1/1) ... [2021-12-15 10:49:39,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:49:39,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:39,586 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) [2021-12-15 10:49:39,589 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 [2021-12-15 10:49:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:49:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:49:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 10:49:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:49:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:49:39,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:49:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:49:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:49:39,653 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:49:39,654 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:49:39,776 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:49:39,798 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:49:39,799 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-15 10:49:39,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:49:39 BoogieIcfgContainer [2021-12-15 10:49:39,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:49:39,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:49:39,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:49:39,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:49:39,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:49:39" (1/3) ... [2021-12-15 10:49:39,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333ddc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:49:39, skipping insertion in model container [2021-12-15 10:49:39,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:49:39" (2/3) ... [2021-12-15 10:49:39,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333ddc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:49:39, skipping insertion in model container [2021-12-15 10:49:39,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:49:39" (3/3) ... [2021-12-15 10:49:39,809 INFO L111 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2021-12-15 10:49:39,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:49:39,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:49:39,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:49:39,859 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 [2021-12-15 10:49:39,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:49:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 10:49:39,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:39,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:39,875 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash -814739894, now seen corresponding path program 1 times [2021-12-15 10:49:39,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:39,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040493638] [2021-12-15 10:49:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:39,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:49:39,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:39,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040493638] [2021-12-15 10:49:39,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040493638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:49:39,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:49:39,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:49:39,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743228090] [2021-12-15 10:49:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:49:39,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:49:39,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:49:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:49:40,011 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:40,026 INFO L93 Difference]: Finished difference Result 52 states and 78 transitions. [2021-12-15 10:49:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:49:40,028 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-15 10:49:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:40,033 INFO L225 Difference]: With dead ends: 52 [2021-12-15 10:49:40,033 INFO L226 Difference]: Without dead ends: 24 [2021-12-15 10:49:40,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:49:40,039 INFO L933 BasicCegarLoop]: 35 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, 35 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 [2021-12-15 10:49:40,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:49:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-15 10:49:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-15 10:49:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-12-15 10:49:40,062 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 12 [2021-12-15 10:49:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:40,062 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-12-15 10:49:40,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-12-15 10:49:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 10:49:40,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:40,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:40,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:49:40,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:40,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1144484620, now seen corresponding path program 1 times [2021-12-15 10:49:40,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:40,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539707921] [2021-12-15 10:49:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:40,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:49:40,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:40,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539707921] [2021-12-15 10:49:40,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539707921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:49:40,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:49:40,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 10:49:40,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477977702] [2021-12-15 10:49:40,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:49:40,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 10:49:40,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:40,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 10:49:40,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:49:40,133 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:40,182 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-12-15 10:49:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 10:49:40,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-15 10:49:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:40,183 INFO L225 Difference]: With dead ends: 62 [2021-12-15 10:49:40,183 INFO L226 Difference]: Without dead ends: 42 [2021-12-15 10:49:40,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 10:49:40,184 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:40,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:49:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-15 10:49:40,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25. [2021-12-15 10:49:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-12-15 10:49:40,188 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 14 [2021-12-15 10:49:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:40,188 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-12-15 10:49:40,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-12-15 10:49:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 10:49:40,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:40,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:40,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 10:49:40,199 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1978272138, now seen corresponding path program 1 times [2021-12-15 10:49:40,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:40,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539820124] [2021-12-15 10:49:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:40,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:49:40,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:40,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539820124] [2021-12-15 10:49:40,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539820124] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:40,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012221290] [2021-12-15 10:49:40,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:40,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:40,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:40,300 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) [2021-12-15 10:49:40,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 10:49:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:40,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 10:49:40,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 10:49:40,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:49:40,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012221290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:49:40,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 10:49:40,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-12-15 10:49:40,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972483257] [2021-12-15 10:49:40,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:49:40,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 10:49:40,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 10:49:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 10:49:40,473 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:40,498 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2021-12-15 10:49:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 10:49:40,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-15 10:49:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:40,499 INFO L225 Difference]: With dead ends: 51 [2021-12-15 10:49:40,499 INFO L226 Difference]: Without dead ends: 47 [2021-12-15 10:49:40,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-15 10:49:40,500 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:40,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 120 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:49:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-15 10:49:40,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2021-12-15 10:49:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2021-12-15 10:49:40,517 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2021-12-15 10:49:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:40,517 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2021-12-15 10:49:40,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2021-12-15 10:49:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 10:49:40,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:40,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:40,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:40,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:40,731 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash -35626147, now seen corresponding path program 1 times [2021-12-15 10:49:40,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:40,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773325242] [2021-12-15 10:49:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:40,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 10:49:40,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:40,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773325242] [2021-12-15 10:49:40,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773325242] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:40,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018767079] [2021-12-15 10:49:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:40,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:40,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:40,831 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) [2021-12-15 10:49:40,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 10:49:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:40,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 10:49:40,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 10:49:40,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:49:40,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018767079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:49:40,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 10:49:40,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-12-15 10:49:40,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566235688] [2021-12-15 10:49:40,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:49:40,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 10:49:40,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:40,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 10:49:40,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 10:49:40,933 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:40,953 INFO L93 Difference]: Finished difference Result 96 states and 128 transitions. [2021-12-15 10:49:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 10:49:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-15 10:49:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:40,955 INFO L225 Difference]: With dead ends: 96 [2021-12-15 10:49:40,955 INFO L226 Difference]: Without dead ends: 68 [2021-12-15 10:49:40,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 10:49:40,956 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:40,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 60 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:49:40,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-15 10:49:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2021-12-15 10:49:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2021-12-15 10:49:40,961 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 22 [2021-12-15 10:49:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:40,962 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2021-12-15 10:49:40,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2021-12-15 10:49:40,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 10:49:40,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:40,963 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:40,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:41,183 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,SelfDestructingSolverStorable3 [2021-12-15 10:49:41,184 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1865102999, now seen corresponding path program 1 times [2021-12-15 10:49:41,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:41,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873785042] [2021-12-15 10:49:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:41,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 10:49:41,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:41,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873785042] [2021-12-15 10:49:41,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873785042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:41,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935223766] [2021-12-15 10:49:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:41,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:41,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:41,243 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) [2021-12-15 10:49:41,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 10:49:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:41,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-15 10:49:41,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:41,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 10:49:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 10:49:41,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:41,531 INFO L354 Elim1Store]: treesize reduction 38, result has 11.6 percent of original size [2021-12-15 10:49:41,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2021-12-15 10:49:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 10:49:41,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935223766] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:41,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-15 10:49:41,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 9] total 15 [2021-12-15 10:49:41,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462207483] [2021-12-15 10:49:41,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:49:41,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 10:49:41,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:41,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 10:49:41,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-15 10:49:41,560 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:41,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:41,654 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-12-15 10:49:41,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 10:49:41,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-15 10:49:41,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:41,658 INFO L225 Difference]: With dead ends: 60 [2021-12-15 10:49:41,658 INFO L226 Difference]: Without dead ends: 39 [2021-12-15 10:49:41,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-12-15 10:49:41,660 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:41,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:49:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-15 10:49:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-15 10:49:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-12-15 10:49:41,672 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 23 [2021-12-15 10:49:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:41,673 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-12-15 10:49:41,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-12-15 10:49:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 10:49:41,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:41,674 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:41,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:41,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:41,887 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash 350629058, now seen corresponding path program 1 times [2021-12-15 10:49:41,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:41,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503483515] [2021-12-15 10:49:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:41,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 10:49:41,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503483515] [2021-12-15 10:49:41,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503483515] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612182313] [2021-12-15 10:49:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:41,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:41,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:41,942 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) [2021-12-15 10:49:41,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 10:49:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:41,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-15 10:49:41,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:42,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-15 10:49:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 10:49:42,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:42,205 INFO L354 Elim1Store]: treesize reduction 38, result has 11.6 percent of original size [2021-12-15 10:49:42,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2021-12-15 10:49:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 10:49:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612182313] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 10:49:42,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 10:49:42,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 7] total 15 [2021-12-15 10:49:42,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516465418] [2021-12-15 10:49:42,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 10:49:42,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-15 10:49:42,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-15 10:49:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-15 10:49:42,236 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:42,429 INFO L93 Difference]: Finished difference Result 168 states and 224 transitions. [2021-12-15 10:49:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 10:49:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-15 10:49:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:42,430 INFO L225 Difference]: With dead ends: 168 [2021-12-15 10:49:42,430 INFO L226 Difference]: Without dead ends: 134 [2021-12-15 10:49:42,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-12-15 10:49:42,431 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 273 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:42,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 152 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 10:49:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-15 10:49:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 43. [2021-12-15 10:49:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-12-15 10:49:42,438 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 24 [2021-12-15 10:49:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:42,438 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-12-15 10:49:42,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2021-12-15 10:49:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 10:49:42,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:42,439 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:42,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:42,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:42,655 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1327832546, now seen corresponding path program 1 times [2021-12-15 10:49:42,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282184149] [2021-12-15 10:49:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:42,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 10:49:42,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282184149] [2021-12-15 10:49:42,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282184149] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383304584] [2021-12-15 10:49:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:42,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:42,722 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) [2021-12-15 10:49:42,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 10:49:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:42,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 10:49:42,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 10:49:42,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 10:49:42,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383304584] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 10:49:42,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 10:49:42,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2021-12-15 10:49:42,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905333580] [2021-12-15 10:49:42,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 10:49:42,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 10:49:42,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 10:49:42,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 10:49:42,872 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:43,168 INFO L93 Difference]: Finished difference Result 318 states and 471 transitions. [2021-12-15 10:49:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-15 10:49:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-15 10:49:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:43,169 INFO L225 Difference]: With dead ends: 318 [2021-12-15 10:49:43,169 INFO L226 Difference]: Without dead ends: 282 [2021-12-15 10:49:43,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-12-15 10:49:43,170 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 271 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:43,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 159 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 10:49:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-15 10:49:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 73. [2021-12-15 10:49:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 72 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2021-12-15 10:49:43,178 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 27 [2021-12-15 10:49:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:43,178 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2021-12-15 10:49:43,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2021-12-15 10:49:43,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-15 10:49:43,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:43,179 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:43,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:43,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:43,396 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1303869421, now seen corresponding path program 2 times [2021-12-15 10:49:43,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:43,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373152691] [2021-12-15 10:49:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:43,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-15 10:49:43,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373152691] [2021-12-15 10:49:43,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373152691] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117241659] [2021-12-15 10:49:43,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 10:49:43,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:43,457 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) [2021-12-15 10:49:43,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 10:49:43,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 10:49:43,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 10:49:43,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-15 10:49:43,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:43,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 10:49:43,593 INFO L388 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 45 treesize of output 40 [2021-12-15 10:49:43,600 INFO L388 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 12 treesize of output 11 [2021-12-15 10:49:43,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 10:49:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-15 10:49:43,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-15 10:49:44,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117241659] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 10:49:44,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 10:49:44,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 23 [2021-12-15 10:49:44,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847997704] [2021-12-15 10:49:44,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 10:49:44,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-15 10:49:44,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-15 10:49:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-12-15 10:49:44,105 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:44,840 INFO L93 Difference]: Finished difference Result 544 states and 715 transitions. [2021-12-15 10:49:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-15 10:49:44,841 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-15 10:49:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:44,843 INFO L225 Difference]: With dead ends: 544 [2021-12-15 10:49:44,843 INFO L226 Difference]: Without dead ends: 480 [2021-12-15 10:49:44,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=1335, Unknown=0, NotChecked=0, Total=1640 [2021-12-15 10:49:44,845 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 611 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:44,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 624 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 10:49:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-15 10:49:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 162. [2021-12-15 10:49:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.2981366459627328) internal successors, (209), 161 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 209 transitions. [2021-12-15 10:49:44,871 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 209 transitions. Word has length 38 [2021-12-15 10:49:44,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:44,872 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 209 transitions. [2021-12-15 10:49:44,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 209 transitions. [2021-12-15 10:49:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-15 10:49:44,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:44,876 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:44,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:45,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:45,080 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:45,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1275455806, now seen corresponding path program 1 times [2021-12-15 10:49:45,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:45,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563565776] [2021-12-15 10:49:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:45,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-15 10:49:45,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563565776] [2021-12-15 10:49:45,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563565776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688720632] [2021-12-15 10:49:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:45,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:45,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:45,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 10:49:45,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 10:49:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:45,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-15 10:49:45,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-15 10:49:45,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-15 10:49:45,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688720632] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 10:49:45,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 10:49:45,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2021-12-15 10:49:45,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828249263] [2021-12-15 10:49:45,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 10:49:45,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 10:49:45,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 10:49:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-15 10:49:45,410 INFO L87 Difference]: Start difference. First operand 162 states and 209 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:46,233 INFO L93 Difference]: Finished difference Result 882 states and 1255 transitions. [2021-12-15 10:49:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-15 10:49:46,234 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-15 10:49:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:46,236 INFO L225 Difference]: With dead ends: 882 [2021-12-15 10:49:46,236 INFO L226 Difference]: Without dead ends: 731 [2021-12-15 10:49:46,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=433, Invalid=1547, Unknown=0, NotChecked=0, Total=1980 [2021-12-15 10:49:46,237 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 873 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:46,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 534 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 10:49:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-12-15 10:49:46,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 248. [2021-12-15 10:49:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.3076923076923077) internal successors, (323), 247 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 323 transitions. [2021-12-15 10:49:46,263 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 323 transitions. Word has length 49 [2021-12-15 10:49:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:46,264 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 323 transitions. [2021-12-15 10:49:46,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 323 transitions. [2021-12-15 10:49:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-15 10:49:46,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:46,266 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:46,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-15 10:49:46,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:46,479 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1476472032, now seen corresponding path program 2 times [2021-12-15 10:49:46,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:46,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313775173] [2021-12-15 10:49:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:46,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-15 10:49:46,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:46,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313775173] [2021-12-15 10:49:46,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313775173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:46,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139211170] [2021-12-15 10:49:46,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 10:49:46,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:46,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:46,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 10:49:46,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 10:49:46,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 10:49:46,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 10:49:46,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-15 10:49:46,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-15 10:49:46,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-15 10:49:46,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139211170] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 10:49:46,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 10:49:46,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2021-12-15 10:49:46,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468191249] [2021-12-15 10:49:46,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 10:49:46,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-15 10:49:46,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-15 10:49:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-12-15 10:49:46,970 INFO L87 Difference]: Start difference. First operand 248 states and 323 transitions. Second operand has 22 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:48,880 INFO L93 Difference]: Finished difference Result 1342 states and 1877 transitions. [2021-12-15 10:49:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-12-15 10:49:48,880 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-15 10:49:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:48,883 INFO L225 Difference]: With dead ends: 1342 [2021-12-15 10:49:48,883 INFO L226 Difference]: Without dead ends: 1107 [2021-12-15 10:49:48,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1095, Invalid=5877, Unknown=0, NotChecked=0, Total=6972 [2021-12-15 10:49:48,886 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1151 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:48,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 2027 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 10:49:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-12-15 10:49:48,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 346. [2021-12-15 10:49:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.3130434782608695) internal successors, (453), 345 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 453 transitions. [2021-12-15 10:49:48,905 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 453 transitions. Word has length 69 [2021-12-15 10:49:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:48,905 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 453 transitions. [2021-12-15 10:49:48,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 453 transitions. [2021-12-15 10:49:48,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-15 10:49:48,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:48,907 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:48,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:49,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-15 10:49:49,116 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash 646144094, now seen corresponding path program 3 times [2021-12-15 10:49:49,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:49,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288391777] [2021-12-15 10:49:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:49,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-15 10:49:49,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:49,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288391777] [2021-12-15 10:49:49,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288391777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:49,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121054386] [2021-12-15 10:49:49,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 10:49:49,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:49,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:49,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 10:49:49,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 10:49:49,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-15 10:49:49,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 10:49:49,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-15 10:49:49,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-15 10:49:49,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-12-15 10:49:49,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121054386] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 10:49:49,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 10:49:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 18 [2021-12-15 10:49:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031293046] [2021-12-15 10:49:49,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 10:49:49,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-15 10:49:49,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:49,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-15 10:49:49,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-12-15 10:49:49,870 INFO L87 Difference]: Start difference. First operand 346 states and 453 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:51,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:49:51,971 INFO L93 Difference]: Finished difference Result 2347 states and 3111 transitions. [2021-12-15 10:49:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-15 10:49:51,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-12-15 10:49:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:49:51,976 INFO L225 Difference]: With dead ends: 2347 [2021-12-15 10:49:51,976 INFO L226 Difference]: Without dead ends: 2016 [2021-12-15 10:49:51,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2021-12-15 10:49:51,977 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 1131 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 10:49:51,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 638 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 10:49:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-12-15 10:49:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 362. [2021-12-15 10:49:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.3019390581717452) internal successors, (470), 361 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 470 transitions. [2021-12-15 10:49:52,006 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 470 transitions. Word has length 89 [2021-12-15 10:49:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:49:52,006 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 470 transitions. [2021-12-15 10:49:52,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:49:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 470 transitions. [2021-12-15 10:49:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-15 10:49:52,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:49:52,007 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:49:52,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 10:49:52,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:52,212 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:49:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:49:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash 64411734, now seen corresponding path program 4 times [2021-12-15 10:49:52,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:49:52,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643120813] [2021-12-15 10:49:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:49:52,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:49:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:49:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-12-15 10:49:52,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:49:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643120813] [2021-12-15 10:49:52,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643120813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:49:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048047831] [2021-12-15 10:49:52,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 10:49:52,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:49:52,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:49:52,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 10:49:52,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 10:49:53,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 10:49:53,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 10:49:53,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-15 10:49:53,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:49:53,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-15 10:49:53,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:53,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-15 10:49:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 63 proven. 95 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-15 10:49:54,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:49:57,135 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse2 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|)) (.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse0 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296))))) (or (< .cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse2) (<= .cse2 2147483647) (< (select .cse1 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse0) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) is different from false [2021-12-15 10:49:57,356 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse0 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296)))) (.cse2 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< .cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse2) (< (select .cse1 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse0) (<= .cse2 2147483647) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) is different from false [2021-12-15 10:49:57,629 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse1 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296)))) (.cse0 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse0) (< .cse1 (select .cse2 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< (select .cse2 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse1) (<= .cse0 2147483647) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) is different from false [2021-12-15 10:49:58,003 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse1 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296)))) (.cse0 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse0) (< .cse1 (select .cse2 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< (select .cse2 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse1) (<= .cse0 2147483647) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) (<= 10 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) is different from false [2021-12-15 10:49:58,067 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse1 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296)))) (.cse0 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse0) (< .cse1 (select .cse2 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< (select .cse2 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse1) (<= .cse0 2147483647) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) (<= 10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) is different from false [2021-12-15 10:49:58,125 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse1 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296)))) (.cse0 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse0) (< .cse1 (select .cse2 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< (select .cse2 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse1) (<= .cse0 2147483647) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) (<= 10 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) is different from false [2021-12-15 10:49:58,186 WARN L838 $PredicateComparison]: unable to prove that (or (<= 10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296)) (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse1 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296)))) (.cse0 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse0) (< .cse1 (select .cse2 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< (select .cse2 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse1) (<= .cse0 2147483647) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) (<= 10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) is different from false [2021-12-15 10:49:58,250 WARN L838 $PredicateComparison]: unable to prove that (or (<= 10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296)) (and (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse2 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|)) (.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse0 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296))))) (or (< .cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (<= 4294967296 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (<= 4294967296 .cse2) (<= .cse2 2147483647) (< (select .cse1 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse0) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 2147483647)))) (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| Int) (v_ArrVal_309 (Array Int Int))) (let ((.cse4 (select v_ArrVal_309 (+ (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 4294967296) |c_ULTIMATE.start_main_~#string_entrada~0#1.offset|))) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#string_entrada~0#1.base| v_ArrVal_309) |c_ULTIMATE.start_main_~#vetor_vogais~0#1.base|)) (.cse5 (+ (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|))) (or (< (select .cse3 |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset|) .cse4) (< 2147483647 .cse5) (< |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56| 0) (< .cse4 (select .cse3 (+ |c_ULTIMATE.start_main_~#vetor_vogais~0#1.offset| 2))) (< 2147483647 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_45_56|) (< .cse5 0))))) (<= 10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) is different from false [2021-12-15 10:49:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 183 trivial. 78 not checked. [2021-12-15 10:49:58,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048047831] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 10:49:58,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 10:49:58,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 21] total 47 [2021-12-15 10:49:58,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469633717] [2021-12-15 10:49:58,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 10:49:58,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-15 10:49:58,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:49:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-15 10:49:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1307, Unknown=8, NotChecked=648, Total=2162 [2021-12-15 10:49:58,276 INFO L87 Difference]: Start difference. First operand 362 states and 470 transitions. Second operand has 47 states, 47 states have (on average 2.723404255319149) internal successors, (128), 47 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:50:05,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:50:05,752 INFO L93 Difference]: Finished difference Result 1116 states and 1462 transitions. [2021-12-15 10:50:05,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-12-15 10:50:05,753 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.723404255319149) internal successors, (128), 47 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-15 10:50:05,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:50:05,756 INFO L225 Difference]: With dead ends: 1116 [2021-12-15 10:50:05,756 INFO L226 Difference]: Without dead ends: 972 [2021-12-15 10:50:05,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 166 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 7735 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2402, Invalid=23062, Unknown=8, NotChecked=2584, Total=28056 [2021-12-15 10:50:05,763 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 600 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 5956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3086 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 10:50:05,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 1842 Invalid, 5956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2672 Invalid, 0 Unknown, 3086 Unchecked, 1.5s Time] [2021-12-15 10:50:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-12-15 10:50:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 809. [2021-12-15 10:50:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.3106435643564356) internal successors, (1059), 808 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:50:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1059 transitions. [2021-12-15 10:50:05,844 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1059 transitions. Word has length 97 [2021-12-15 10:50:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:50:05,845 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1059 transitions. [2021-12-15 10:50:05,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.723404255319149) internal successors, (128), 47 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:50:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1059 transitions. [2021-12-15 10:50:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-15 10:50:05,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:50:05,846 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 8, 8, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:50:05,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-15 10:50:06,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-15 10:50:06,050 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:50:06,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:50:06,051 INFO L85 PathProgramCache]: Analyzing trace with hash 980530326, now seen corresponding path program 1 times [2021-12-15 10:50:06,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:50:06,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311630652] [2021-12-15 10:50:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:50:06,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:50:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:50:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 21 proven. 126 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-12-15 10:50:06,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:50:06,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311630652] [2021-12-15 10:50:06,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311630652] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 10:50:06,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857927978] [2021-12-15 10:50:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:50:06,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 10:50:06,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:50:06,722 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 10:50:06,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 10:50:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:50:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-15 10:50:06,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:50:19,261 INFO L354 Elim1Store]: treesize reduction 82, result has 65.1 percent of original size [2021-12-15 10:50:19,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 249 [2021-12-15 10:50:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 64 proven. 95 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-15 10:50:19,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 10:50:22,744 INFO L354 Elim1Store]: treesize reduction 145, result has 70.0 percent of original size [2021-12-15 10:50:22,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 224 treesize of output 437