./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/avg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/avg.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 40ea744e34964af110b03a02fd30edb5f9eceb5eca9cf560d6cf7ef319b1e1e5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 09:23:39,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 09:23:39,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 09:23:39,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 09:23:39,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 09:23:39,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 09:23:39,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 09:23:39,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 09:23:39,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 09:23:39,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 09:23:39,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 09:23:39,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 09:23:39,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 09:23:39,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 09:23:39,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 09:23:39,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 09:23:39,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 09:23:39,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 09:23:39,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 09:23:39,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 09:23:39,625 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 09:23:39,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 09:23:39,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 09:23:39,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 09:23:39,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 09:23:39,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 09:23:39,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 09:23:39,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 09:23:39,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 09:23:39,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 09:23:39,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 09:23:39,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 09:23:39,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 09:23:39,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 09:23:39,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 09:23:39,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 09:23:39,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 09:23:39,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 09:23:39,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 09:23:39,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 09:23:39,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 09:23:39,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 09:23:39,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 09:23:39,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 09:23:39,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 09:23:39,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 09:23:39,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 09:23:39,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 09:23:39,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 09:23:39,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 09:23:39,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 09:23:39,663 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 09:23:39,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 09:23:39,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 09:23:39,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 09:23:39,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 09:23:39,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 09:23:39,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 09:23:39,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 09:23:39,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 09:23:39,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 09:23:39,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 09:23:39,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 09:23:39,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 09:23:39,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 09:23:39,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 09:23:39,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 09:23:39,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:23:39,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 09:23:39,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 09:23:39,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 09:23:39,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 09:23:39,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 09:23:39,667 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 09:23:39,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 09:23:39,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 09:23:39,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40ea744e34964af110b03a02fd30edb5f9eceb5eca9cf560d6cf7ef319b1e1e5 [2022-07-19 09:23:39,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 09:23:39,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 09:23:39,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 09:23:39,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 09:23:39,868 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 09:23:39,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg.i [2022-07-19 09:23:39,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede50ae24/de198cfbecd14dfaa5124c7a016cce50/FLAGa3882aafa [2022-07-19 09:23:40,298 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 09:23:40,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg.i [2022-07-19 09:23:40,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede50ae24/de198cfbecd14dfaa5124c7a016cce50/FLAGa3882aafa [2022-07-19 09:23:40,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede50ae24/de198cfbecd14dfaa5124c7a016cce50 [2022-07-19 09:23:40,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 09:23:40,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 09:23:40,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 09:23:40,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 09:23:40,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 09:23:40,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704d12bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40, skipping insertion in model container [2022-07-19 09:23:40,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 09:23:40,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 09:23:40,466 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/reducercommutativity/avg.i[1286,1299] [2022-07-19 09:23:40,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:23:40,479 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 09:23:40,506 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/reducercommutativity/avg.i[1286,1299] [2022-07-19 09:23:40,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:23:40,517 INFO L208 MainTranslator]: Completed translation [2022-07-19 09:23:40,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40 WrapperNode [2022-07-19 09:23:40,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 09:23:40,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 09:23:40,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 09:23:40,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 09:23:40,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,552 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2022-07-19 09:23:40,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 09:23:40,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 09:23:40,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 09:23:40,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 09:23:40,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 09:23:40,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 09:23:40,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 09:23:40,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 09:23:40,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (1/1) ... [2022-07-19 09:23:40,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:23:40,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:23:40,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 09:23:40,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 09:23:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 09:23:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 09:23:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 09:23:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 09:23:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-07-19 09:23:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-07-19 09:23:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 09:23:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 09:23:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 09:23:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 09:23:40,682 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 09:23:40,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 09:23:40,810 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 09:23:40,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 09:23:40,815 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 09:23:40,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:23:40 BoogieIcfgContainer [2022-07-19 09:23:40,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 09:23:40,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 09:23:40,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 09:23:40,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 09:23:40,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:23:40" (1/3) ... [2022-07-19 09:23:40,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f03e696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:23:40, skipping insertion in model container [2022-07-19 09:23:40,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:23:40" (2/3) ... [2022-07-19 09:23:40,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f03e696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:23:40, skipping insertion in model container [2022-07-19 09:23:40,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:23:40" (3/3) ... [2022-07-19 09:23:40,831 INFO L111 eAbstractionObserver]: Analyzing ICFG avg.i [2022-07-19 09:23:40,841 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 09:23:40,842 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 09:23:40,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 09:23:40,895 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ae2e071, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dbcdc10 [2022-07-19 09:23:40,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 09:23:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 09:23:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 09:23:40,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:23:40,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:23:40,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:23:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:23:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash 471565210, now seen corresponding path program 1 times [2022-07-19 09:23:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:23:40,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405643807] [2022-07-19 09:23:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:23:40,985 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 09:23:40,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261582672] [2022-07-19 09:23:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:40,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:23:40,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:23:40,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:23:40,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 09:23:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:23:41,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 09:23:41,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:23:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 09:23:41,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 09:23:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:23:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405643807] [2022-07-19 09:23:41,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 09:23:41,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261582672] [2022-07-19 09:23:41,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261582672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:23:41,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 09:23:41,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 09:23:41,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551626641] [2022-07-19 09:23:41,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:23:41,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 09:23:41,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:23:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 09:23:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 09:23:41,179 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:23:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:23:41,194 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-07-19 09:23:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 09:23:41,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-07-19 09:23:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:23:41,203 INFO L225 Difference]: With dead ends: 48 [2022-07-19 09:23:41,203 INFO L226 Difference]: Without dead ends: 21 [2022-07-19 09:23:41,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 09:23:41,209 INFO L413 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:23:41,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:23:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-19 09:23:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-19 09:23:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 09:23:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-19 09:23:41,236 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 28 [2022-07-19 09:23:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:23:41,237 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-19 09:23:41,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:23:41,237 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-19 09:23:41,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 09:23:41,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:23:41,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:23:41,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 09:23:41,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 09:23:41,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:23:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:23:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1631628524, now seen corresponding path program 1 times [2022-07-19 09:23:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:23:41,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418699153] [2022-07-19 09:23:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:23:41,477 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 09:23:41,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976936248] [2022-07-19 09:23:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:41,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:23:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:23:41,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:23:41,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 09:23:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:23:41,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 09:23:41,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:23:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 09:23:41,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 09:23:41,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:23:41,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418699153] [2022-07-19 09:23:41,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 09:23:41,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976936248] [2022-07-19 09:23:41,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976936248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:23:41,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 09:23:41,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 09:23:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971138277] [2022-07-19 09:23:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:23:41,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 09:23:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:23:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 09:23:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 09:23:41,581 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:23:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:23:41,607 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-07-19 09:23:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 09:23:41,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-07-19 09:23:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:23:41,608 INFO L225 Difference]: With dead ends: 40 [2022-07-19 09:23:41,608 INFO L226 Difference]: Without dead ends: 23 [2022-07-19 09:23:41,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 09:23:41,610 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:23:41,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:23:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-19 09:23:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-07-19 09:23:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 09:23:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-19 09:23:41,615 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 28 [2022-07-19 09:23:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:23:41,615 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-19 09:23:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:23:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-19 09:23:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 09:23:41,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:23:41,616 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:23:41,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 09:23:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-19 09:23:41,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:23:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:23:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1116044242, now seen corresponding path program 1 times [2022-07-19 09:23:41,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:23:41,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702801915] [2022-07-19 09:23:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:41,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:23:41,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 09:23:41,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186864122] [2022-07-19 09:23:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:41,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:23:41,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:23:41,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:23:41,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 09:23:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:23:41,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 09:23:41,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:23:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 09:23:41,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:23:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 09:23:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:23:42,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702801915] [2022-07-19 09:23:42,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 09:23:42,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186864122] [2022-07-19 09:23:42,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186864122] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:23:42,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 09:23:42,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2022-07-19 09:23:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365563539] [2022-07-19 09:23:42,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 09:23:42,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 09:23:42,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:23:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 09:23:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 09:23:42,033 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 09:23:42,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:23:42,084 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-07-19 09:23:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 09:23:42,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2022-07-19 09:23:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:23:42,085 INFO L225 Difference]: With dead ends: 43 [2022-07-19 09:23:42,085 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 09:23:42,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 09:23:42,087 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:23:42,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:23:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 09:23:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-07-19 09:23:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 09:23:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-07-19 09:23:42,091 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 34 [2022-07-19 09:23:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:23:42,091 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-07-19 09:23:42,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 09:23:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-07-19 09:23:42,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 09:23:42,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:23:42,092 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:23:42,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 09:23:42,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:23:42,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:23:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:23:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1547444720, now seen corresponding path program 2 times [2022-07-19 09:23:42,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:23:42,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105165429] [2022-07-19 09:23:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:42,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:23:42,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 09:23:42,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531601983] [2022-07-19 09:23:42,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 09:23:42,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:23:42,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:23:42,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:23:42,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 09:23:42,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 09:23:42,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:23:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 09:23:42,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:23:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 09:23:42,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 09:23:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:23:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105165429] [2022-07-19 09:23:42,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 09:23:42,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531601983] [2022-07-19 09:23:42,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531601983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:23:42,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 09:23:42,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 09:23:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289663038] [2022-07-19 09:23:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:23:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 09:23:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:23:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 09:23:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 09:23:42,446 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:23:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:23:42,486 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-07-19 09:23:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 09:23:42,488 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-07-19 09:23:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:23:42,489 INFO L225 Difference]: With dead ends: 41 [2022-07-19 09:23:42,490 INFO L226 Difference]: Without dead ends: 26 [2022-07-19 09:23:42,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 09:23:42,492 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:23:42,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:23:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-19 09:23:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-19 09:23:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 09:23:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-19 09:23:42,500 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 40 [2022-07-19 09:23:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:23:42,500 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-19 09:23:42,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 09:23:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-19 09:23:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 09:23:42,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:23:42,502 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:23:42,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 09:23:42,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:23:42,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:23:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:23:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1088129362, now seen corresponding path program 1 times [2022-07-19 09:23:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:23:42,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407539785] [2022-07-19 09:23:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:23:42,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 09:23:42,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362614425] [2022-07-19 09:23:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:23:42,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:23:42,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:23:42,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:23:42,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 09:23:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:23:43,005 WARN L261 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-19 09:23:43,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:23:43,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:23:43,659 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:23:43,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 269 treesize of output 139 [2022-07-19 09:24:01,539 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:24:10,859 WARN L233 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:24:23,257 WARN L233 SmtUtils]: Spent 11.55s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:24:36,221 WARN L233 SmtUtils]: Spent 11.63s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:24:51,903 WARN L233 SmtUtils]: Spent 12.47s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:25:09,921 WARN L233 SmtUtils]: Spent 13.34s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:25:24,410 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 91 DAG size of output: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:25:36,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:25:36,313 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:25:36,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 509 treesize of output 264 [2022-07-19 09:25:50,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 09:25:50,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:25:50,064 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 09:25:50,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 418 treesize of output 276 [2022-07-19 09:26:36,966 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:26:51,534 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:27:08,995 WARN L233 SmtUtils]: Spent 10.34s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:27:26,891 WARN L233 SmtUtils]: Spent 11.51s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:27:45,676 WARN L233 SmtUtils]: Spent 11.48s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:28:08,071 WARN L233 SmtUtils]: Spent 11.26s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 09:28:09,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 09:28:09,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 09:28:14,713 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 57 DAG size of output: 51 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-19 09:28:14,714 INFO L356 Elim1Store]: treesize reduction 24, result has 80.6 percent of original size [2022-07-19 09:28:14,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 925 treesize of output 544