./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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/uthash-2.0.2/uthash_JEN_test4-3.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 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 23:20:08,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 23:20:08,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 23:20:08,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 23:20:08,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 23:20:08,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 23:20:08,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 23:20:08,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 23:20:08,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 23:20:08,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 23:20:08,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 23:20:08,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 23:20:08,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 23:20:08,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 23:20:08,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 23:20:08,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 23:20:08,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 23:20:08,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 23:20:08,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 23:20:08,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 23:20:08,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 23:20:08,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 23:20:08,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 23:20:08,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 23:20:08,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 23:20:08,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 23:20:08,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 23:20:08,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 23:20:08,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 23:20:08,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 23:20:08,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 23:20:08,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 23:20:08,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 23:20:08,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 23:20:08,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 23:20:08,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 23:20:08,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 23:20:08,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 23:20:08,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 23:20:08,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 23:20:08,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 23:20:08,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 23:20:08,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 23:20:08,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 23:20:08,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 23:20:08,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 23:20:08,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 23:20:08,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 23:20:08,347 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 23:20:08,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 23:20:08,347 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 23:20:08,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 23:20:08,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 23:20:08,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 23:20:08,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 23:20:08,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 23:20:08,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 23:20:08,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 23:20:08,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 23:20:08,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 23:20:08,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 23:20:08,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 23:20:08,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 23:20:08,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 23:20:08,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:20:08,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 23:20:08,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 23:20:08,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 23:20:08,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 23:20:08,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 23:20:08,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 23:20:08,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 23:20:08,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 23:20:08,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 23:20:08,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2021-11-06 23:20:08,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 23:20:08,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 23:20:08,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 23:20:08,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 23:20:08,636 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 23:20:08,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-06 23:20:08,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f0faa74/7f6e878aad614cb99c9008b21cf2c4c7/FLAG885fa0a61 [2021-11-06 23:20:09,195 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 23:20:09,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-06 23:20:09,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f0faa74/7f6e878aad614cb99c9008b21cf2c4c7/FLAG885fa0a61 [2021-11-06 23:20:09,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f0faa74/7f6e878aad614cb99c9008b21cf2c4c7 [2021-11-06 23:20:09,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 23:20:09,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 23:20:09,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 23:20:09,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 23:20:09,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 23:20:09,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:20:09" (1/1) ... [2021-11-06 23:20:09,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5815508b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:09, skipping insertion in model container [2021-11-06 23:20:09,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:20:09" (1/1) ... [2021-11-06 23:20:09,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 23:20:09,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 23:20:09,880 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-06 23:20:09,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:20:09,994 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 23:20:10,029 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-06 23:20:10,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:20:10,157 INFO L208 MainTranslator]: Completed translation [2021-11-06 23:20:10,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10 WrapperNode [2021-11-06 23:20:10,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 23:20:10,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 23:20:10,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 23:20:10,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 23:20:10,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 23:20:10,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 23:20:10,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 23:20:10,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 23:20:10,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 23:20:10,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 23:20:10,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 23:20:10,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 23:20:10,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (1/1) ... [2021-11-06 23:20:10,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:20:10,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:10,529 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) [2021-11-06 23:20:10,557 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 [2021-11-06 23:20:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 23:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 23:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 23:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 23:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 23:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 23:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 23:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 23:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 23:20:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 23:20:11,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 23:20:11,969 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-06 23:20:11,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:20:11 BoogieIcfgContainer [2021-11-06 23:20:11,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 23:20:11,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 23:20:11,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 23:20:11,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 23:20:11,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:20:09" (1/3) ... [2021-11-06 23:20:11,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f47cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:20:11, skipping insertion in model container [2021-11-06 23:20:11,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:20:10" (2/3) ... [2021-11-06 23:20:11,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f47cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:20:11, skipping insertion in model container [2021-11-06 23:20:11,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:20:11" (3/3) ... [2021-11-06 23:20:11,982 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-3.i [2021-11-06 23:20:11,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 23:20:11,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 23:20:12,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 23:20:12,048 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 [2021-11-06 23:20:12,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 23:20:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 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) [2021-11-06 23:20:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 23:20:12,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:12,081 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:12,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-06 23:20:12,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:12,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254082985] [2021-11-06 23:20:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:12,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:12,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:12,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254082985] [2021-11-06 23:20:12,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254082985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:12,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:12,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 23:20:12,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865491886] [2021-11-06 23:20:12,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 23:20:12,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 23:20:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:20:12,281 INFO L87 Difference]: Start difference. First operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-06 23:20:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:12,346 INFO L93 Difference]: Finished difference Result 540 states and 896 transitions. [2021-11-06 23:20:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 23:20:12,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-06 23:20:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:12,357 INFO L225 Difference]: With dead ends: 540 [2021-11-06 23:20:12,357 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 23:20:12,360 INFO L786 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 [2021-11-06 23:20:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 23:20:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 23:20:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 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) [2021-11-06 23:20:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-06 23:20:12,397 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-06 23:20:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:12,397 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-06 23:20:12,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-06 23:20:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-06 23:20:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 23:20:12,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:12,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:12,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 23:20:12,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:12,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-06 23:20:12,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:12,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550794910] [2021-11-06 23:20:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:12,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:12,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:12,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550794910] [2021-11-06 23:20:12,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550794910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:12,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:12,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:20:12,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440441113] [2021-11-06 23:20:12,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:20:12,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:12,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:20:12,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:20:12,448 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-06 23:20:12,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:12,492 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-06 23:20:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:20:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-06 23:20:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:12,499 INFO L225 Difference]: With dead ends: 432 [2021-11-06 23:20:12,499 INFO L226 Difference]: Without dead ends: 387 [2021-11-06 23:20:12,500 INFO L786 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 [2021-11-06 23:20:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-06 23:20:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-06 23:20:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3605769230769231) internal successors, (283), 217 states have internal predecessors, (283), 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) [2021-11-06 23:20:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-06 23:20:12,528 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-06 23:20:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:12,528 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-06 23:20:12,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-06 23:20:12,529 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-06 23:20:12,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 23:20:12,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:12,534 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:12,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 23:20:12,535 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:12,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-06 23:20:12,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:12,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030242823] [2021-11-06 23:20:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:12,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:12,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:12,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587723222] [2021-11-06 23:20:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:12,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:12,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:12,592 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) [2021-11-06 23:20:12,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 23:20:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:12,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:20:12,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:13,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:13,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030242823] [2021-11-06 23:20:13,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:13,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587723222] [2021-11-06 23:20:13,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587723222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:13,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:13,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:20:13,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408458034] [2021-11-06 23:20:13,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:20:13,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:20:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:20:13,198 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 23:20:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:13,274 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-06 23:20:13,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:20:13,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-06 23:20:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:13,276 INFO L225 Difference]: With dead ends: 454 [2021-11-06 23:20:13,276 INFO L226 Difference]: Without dead ends: 239 [2021-11-06 23:20:13,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:20:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-06 23:20:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-06 23:20:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 237 states have internal predecessors, (303), 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) [2021-11-06 23:20:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-06 23:20:13,306 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-06 23:20:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:13,307 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-06 23:20:13,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 23:20:13,307 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-06 23:20:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 23:20:13,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:13,310 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:13,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:13,525 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 [2021-11-06 23:20:13,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:13,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-06 23:20:13,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:13,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392302383] [2021-11-06 23:20:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:13,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:13,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:13,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011442992] [2021-11-06 23:20:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:13,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:13,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:13,576 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) [2021-11-06 23:20:13,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 23:20:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:13,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:20:13,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:14,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:14,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392302383] [2021-11-06 23:20:14,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:14,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011442992] [2021-11-06 23:20:14,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011442992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:14,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:14,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:20:14,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173011598] [2021-11-06 23:20:14,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:20:14,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:20:14,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:20:14,148 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 23:20:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:14,209 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-06 23:20:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:20:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-06 23:20:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:14,211 INFO L225 Difference]: With dead ends: 494 [2021-11-06 23:20:14,211 INFO L226 Difference]: Without dead ends: 259 [2021-11-06 23:20:14,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:20:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-06 23:20:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-06 23:20:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.3024193548387097) internal successors, (323), 257 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) [2021-11-06 23:20:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-06 23:20:14,218 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-06 23:20:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:14,220 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-06 23:20:14,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 23:20:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-06 23:20:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 23:20:14,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:14,231 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:14,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:14,446 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 [2021-11-06 23:20:14,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-06 23:20:14,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:14,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576502194] [2021-11-06 23:20:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:14,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:14,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:14,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700198629] [2021-11-06 23:20:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:14,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:14,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:14,472 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) [2021-11-06 23:20:14,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 23:20:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:14,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:20:14,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:14,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:14,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576502194] [2021-11-06 23:20:14,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:14,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700198629] [2021-11-06 23:20:14,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700198629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:14,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:14,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:20:14,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458234784] [2021-11-06 23:20:14,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:20:14,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:14,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:20:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:20:14,996 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:15,064 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-06 23:20:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:20:15,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-06 23:20:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:15,066 INFO L225 Difference]: With dead ends: 505 [2021-11-06 23:20:15,066 INFO L226 Difference]: Without dead ends: 250 [2021-11-06 23:20:15,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:20:15,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-06 23:20:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-06 23:20:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 243 states have internal predecessors, (302), 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) [2021-11-06 23:20:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-06 23:20:15,072 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-06 23:20:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:15,072 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-06 23:20:15,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-06 23:20:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 23:20:15,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:15,074 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:15,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:15,283 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 [2021-11-06 23:20:15,284 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:15,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-06 23:20:15,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:15,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025071844] [2021-11-06 23:20:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:15,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:15,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:15,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586528107] [2021-11-06 23:20:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:15,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:15,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:15,301 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) [2021-11-06 23:20:15,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 23:20:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:15,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:20:15,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:15,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:15,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025071844] [2021-11-06 23:20:15,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:15,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586528107] [2021-11-06 23:20:15,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586528107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:15,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:15,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:20:15,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433456143] [2021-11-06 23:20:15,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:20:15,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:20:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:20:15,780 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:15,851 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-06 23:20:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:20:15,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-06 23:20:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:15,853 INFO L225 Difference]: With dead ends: 566 [2021-11-06 23:20:15,854 INFO L226 Difference]: Without dead ends: 325 [2021-11-06 23:20:15,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:20:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-06 23:20:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-06 23:20:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 229 states have internal predecessors, (281), 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) [2021-11-06 23:20:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-06 23:20:15,874 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-06 23:20:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:15,875 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-06 23:20:15,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-06 23:20:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 23:20:15,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:15,876 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:15,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:16,091 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 [2021-11-06 23:20:16,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-06 23:20:16,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:16,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332397401] [2021-11-06 23:20:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:16,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:16,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:16,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950316977] [2021-11-06 23:20:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:16,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:16,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:16,127 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) [2021-11-06 23:20:16,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 23:20:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:16,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:20:16,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:16,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:16,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332397401] [2021-11-06 23:20:16,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:16,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950316977] [2021-11-06 23:20:16,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950316977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 23:20:16,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 23:20:16,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-06 23:20:16,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649797806] [2021-11-06 23:20:16,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:20:16,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:16,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:20:16,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:20:16,688 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:16,717 INFO L93 Difference]: Finished difference Result 638 states and 780 transitions. [2021-11-06 23:20:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:20:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-06 23:20:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:16,721 INFO L225 Difference]: With dead ends: 638 [2021-11-06 23:20:16,721 INFO L226 Difference]: Without dead ends: 593 [2021-11-06 23:20:16,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:20:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-06 23:20:16,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 412. [2021-11-06 23:20:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 402 states have (on average 1.2512437810945274) internal successors, (503), 411 states have internal predecessors, (503), 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) [2021-11-06 23:20:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 503 transitions. [2021-11-06 23:20:16,737 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 503 transitions. Word has length 106 [2021-11-06 23:20:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:16,738 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 503 transitions. [2021-11-06 23:20:16,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 503 transitions. [2021-11-06 23:20:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-06 23:20:16,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:16,740 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:16,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:16,955 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 [2021-11-06 23:20:16,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:16,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash 548829604, now seen corresponding path program 2 times [2021-11-06 23:20:16,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:16,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151653060] [2021-11-06 23:20:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:16,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:16,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:16,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774488355] [2021-11-06 23:20:16,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:20:16,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:16,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:16,977 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) [2021-11-06 23:20:16,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 23:20:17,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 23:20:17,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:20:17,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 23:20:17,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-06 23:20:18,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:18,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151653060] [2021-11-06 23:20:18,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:18,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774488355] [2021-11-06 23:20:18,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774488355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:18,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:18,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:20:18,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970636642] [2021-11-06 23:20:18,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:20:18,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:20:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:20:18,470 INFO L87 Difference]: Start difference. First operand 412 states and 503 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:18,705 INFO L93 Difference]: Finished difference Result 677 states and 831 transitions. [2021-11-06 23:20:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:20:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 204 [2021-11-06 23:20:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:18,708 INFO L225 Difference]: With dead ends: 677 [2021-11-06 23:20:18,708 INFO L226 Difference]: Without dead ends: 410 [2021-11-06 23:20:18,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:20:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-06 23:20:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-06 23:20:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 400 states have (on average 1.25) internal successors, (500), 409 states have internal predecessors, (500), 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) [2021-11-06 23:20:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 500 transitions. [2021-11-06 23:20:18,719 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 500 transitions. Word has length 204 [2021-11-06 23:20:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:18,719 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 500 transitions. [2021-11-06 23:20:18,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 23:20:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 500 transitions. [2021-11-06 23:20:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 23:20:18,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:18,722 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:18,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:18,935 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 [2021-11-06 23:20:18,936 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash -7696284, now seen corresponding path program 1 times [2021-11-06 23:20:18,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:18,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847291018] [2021-11-06 23:20:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:18,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:18,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:18,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554747437] [2021-11-06 23:20:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:18,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:18,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:18,957 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) [2021-11-06 23:20:18,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 23:20:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:19,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 23:20:19,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:19,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:19,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847291018] [2021-11-06 23:20:19,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:19,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554747437] [2021-11-06 23:20:19,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554747437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 23:20:19,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 23:20:19,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-06 23:20:19,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253929865] [2021-11-06 23:20:19,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 23:20:19,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:19,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 23:20:19,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:20:19,958 INFO L87 Difference]: Start difference. First operand 410 states and 500 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2021-11-06 23:20:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:19,997 INFO L93 Difference]: Finished difference Result 818 states and 999 transitions. [2021-11-06 23:20:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 23:20:19,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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 211 [2021-11-06 23:20:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:20,001 INFO L225 Difference]: With dead ends: 818 [2021-11-06 23:20:20,002 INFO L226 Difference]: Without dead ends: 773 [2021-11-06 23:20:20,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:20:20,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-06 23:20:20,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 592. [2021-11-06 23:20:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 582 states have (on average 1.2405498281786942) internal successors, (722), 591 states have internal predecessors, (722), 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) [2021-11-06 23:20:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 722 transitions. [2021-11-06 23:20:20,018 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 722 transitions. Word has length 211 [2021-11-06 23:20:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:20,018 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 722 transitions. [2021-11-06 23:20:20,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2021-11-06 23:20:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 722 transitions. [2021-11-06 23:20:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-06 23:20:20,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:20,023 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:20,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:20,250 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 [2021-11-06 23:20:20,251 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1450675781, now seen corresponding path program 2 times [2021-11-06 23:20:20,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:20,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414642925] [2021-11-06 23:20:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:20,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:20,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:20,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548266677] [2021-11-06 23:20:20,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:20:20,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:20,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:20,288 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) [2021-11-06 23:20:20,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 23:20:20,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 23:20:20,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:20:20,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:20:20,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:21,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:21,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414642925] [2021-11-06 23:20:21,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:21,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548266677] [2021-11-06 23:20:21,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548266677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 23:20:21,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 23:20:21,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-06 23:20:21,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872934212] [2021-11-06 23:20:21,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 23:20:21,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 23:20:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:20:21,641 INFO L87 Difference]: Start difference. First operand 592 states and 722 transitions. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2021-11-06 23:20:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:21,700 INFO L93 Difference]: Finished difference Result 1000 states and 1221 transitions. [2021-11-06 23:20:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 23:20:21,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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 309 [2021-11-06 23:20:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:21,705 INFO L225 Difference]: With dead ends: 1000 [2021-11-06 23:20:21,705 INFO L226 Difference]: Without dead ends: 955 [2021-11-06 23:20:21,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:20:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-11-06 23:20:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 774. [2021-11-06 23:20:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.2356020942408377) internal successors, (944), 773 states have internal predecessors, (944), 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) [2021-11-06 23:20:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-06 23:20:21,749 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 309 [2021-11-06 23:20:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:21,749 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-06 23:20:21,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2021-11-06 23:20:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-06 23:20:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-06 23:20:21,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:21,755 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:21,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:21,971 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 [2021-11-06 23:20:21,972 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 3 times [2021-11-06 23:20:21,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:21,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344976515] [2021-11-06 23:20:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:21,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:21,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:21,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708845006] [2021-11-06 23:20:21,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 23:20:21,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:21,994 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) [2021-11-06 23:20:21,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 23:20:22,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 23:20:22,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:20:22,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:20:22,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2021-11-06 23:20:24,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:24,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344976515] [2021-11-06 23:20:24,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:24,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708845006] [2021-11-06 23:20:24,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708845006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:20:24,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:20:24,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:20:24,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882325892] [2021-11-06 23:20:24,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:20:24,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:20:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:20:24,603 INFO L87 Difference]: Start difference. First operand 774 states and 944 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-06 23:20:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:24,649 INFO L93 Difference]: Finished difference Result 1490 states and 1822 transitions. [2021-11-06 23:20:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:20:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 407 [2021-11-06 23:20:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:24,655 INFO L225 Difference]: With dead ends: 1490 [2021-11-06 23:20:24,655 INFO L226 Difference]: Without dead ends: 772 [2021-11-06 23:20:24,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:20:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-06 23:20:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2021-11-06 23:20:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 762 states have (on average 1.2349081364829397) internal successors, (941), 771 states have internal predecessors, (941), 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) [2021-11-06 23:20:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 941 transitions. [2021-11-06 23:20:24,679 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 941 transitions. Word has length 407 [2021-11-06 23:20:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:24,679 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 941 transitions. [2021-11-06 23:20:24,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-06 23:20:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 941 transitions. [2021-11-06 23:20:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-06 23:20:24,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:24,686 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:24,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:24,911 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 [2021-11-06 23:20:24,911 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2077967202, now seen corresponding path program 1 times [2021-11-06 23:20:24,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:24,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074413540] [2021-11-06 23:20:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:24,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:24,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:24,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527493762] [2021-11-06 23:20:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:24,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:24,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:24,937 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) [2021-11-06 23:20:24,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 23:20:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:20:25,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 23:20:25,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:26,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:26,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074413540] [2021-11-06 23:20:26,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:26,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527493762] [2021-11-06 23:20:26,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527493762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 23:20:26,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 23:20:26,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-06 23:20:26,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097506703] [2021-11-06 23:20:26,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 23:20:26,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 23:20:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 23:20:26,765 INFO L87 Difference]: Start difference. First operand 772 states and 941 transitions. Second operand has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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) [2021-11-06 23:20:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:26,833 INFO L93 Difference]: Finished difference Result 1180 states and 1440 transitions. [2021-11-06 23:20:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 23:20:26,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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 414 [2021-11-06 23:20:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:26,838 INFO L225 Difference]: With dead ends: 1180 [2021-11-06 23:20:26,838 INFO L226 Difference]: Without dead ends: 1135 [2021-11-06 23:20:26,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 23:20:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-06 23:20:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 954. [2021-11-06 23:20:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 944 states have (on average 1.2319915254237288) internal successors, (1163), 953 states have internal predecessors, (1163), 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) [2021-11-06 23:20:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1163 transitions. [2021-11-06 23:20:26,859 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1163 transitions. Word has length 414 [2021-11-06 23:20:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:26,860 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1163 transitions. [2021-11-06 23:20:26,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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) [2021-11-06 23:20:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1163 transitions. [2021-11-06 23:20:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-11-06 23:20:26,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:26,868 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:26,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:27,092 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 [2021-11-06 23:20:27,092 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:27,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1990200007, now seen corresponding path program 2 times [2021-11-06 23:20:27,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:27,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338512464] [2021-11-06 23:20:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:27,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:27,144 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:27,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930543523] [2021-11-06 23:20:27,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:20:27,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:27,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:27,146 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) [2021-11-06 23:20:27,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 23:20:28,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 23:20:28,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:20:28,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 23:20:28,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:20:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:20:29,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:20:29,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338512464] [2021-11-06 23:20:29,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:20:29,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930543523] [2021-11-06 23:20:29,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930543523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 23:20:29,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 23:20:29,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-06 23:20:29,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510494617] [2021-11-06 23:20:29,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 23:20:29,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:20:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 23:20:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 23:20:29,325 INFO L87 Difference]: Start difference. First operand 954 states and 1163 transitions. Second operand has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2021-11-06 23:20:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:20:29,401 INFO L93 Difference]: Finished difference Result 1362 states and 1662 transitions. [2021-11-06 23:20:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 23:20:29,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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 512 [2021-11-06 23:20:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:20:29,407 INFO L225 Difference]: With dead ends: 1362 [2021-11-06 23:20:29,408 INFO L226 Difference]: Without dead ends: 1317 [2021-11-06 23:20:29,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 23:20:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2021-11-06 23:20:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1136. [2021-11-06 23:20:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1126 states have (on average 1.2300177619893429) internal successors, (1385), 1135 states have internal predecessors, (1385), 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) [2021-11-06 23:20:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1385 transitions. [2021-11-06 23:20:29,457 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1385 transitions. Word has length 512 [2021-11-06 23:20:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:20:29,457 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1385 transitions. [2021-11-06 23:20:29,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2021-11-06 23:20:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1385 transitions. [2021-11-06 23:20:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-06 23:20:29,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:20:29,465 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:20:29,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 23:20:29,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 23:20:29,680 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 23:20:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:20:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1529530032, now seen corresponding path program 3 times [2021-11-06 23:20:29,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:20:29,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126375804] [2021-11-06 23:20:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:20:29,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:20:29,711 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:20:29,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784362932] [2021-11-06 23:20:29,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 23:20:29,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:20:29,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:20:29,714 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:20:29,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15