./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_SAX_test7-1.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 67499ec0709cfdcc368630c5b1d94f26157589b8bf16f22cf5d62554760c6dd7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 06:35:49,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 06:35:49,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 06:35:49,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 06:35:49,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 06:35:49,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 06:35:49,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 06:35:49,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 06:35:49,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 06:35:49,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 06:35:49,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 06:35:49,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 06:35:49,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 06:35:49,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 06:35:49,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 06:35:49,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 06:35:49,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 06:35:49,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 06:35:49,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 06:35:49,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 06:35:49,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 06:35:49,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 06:35:49,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 06:35:49,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 06:35:49,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 06:35:49,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 06:35:49,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 06:35:49,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 06:35:49,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 06:35:49,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 06:35:49,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 06:35:49,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 06:35:49,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 06:35:49,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 06:35:49,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 06:35:49,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 06:35:49,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 06:35:49,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 06:35:49,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 06:35:49,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 06:35:49,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 06:35:49,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 06:35:49,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 06:35:49,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 06:35:49,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 06:35:49,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 06:35:49,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 06:35:49,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 06:35:49,606 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 06:35:49,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 06:35:49,606 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 06:35:49,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 06:35:49,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 06:35:49,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 06:35:49,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 06:35:49,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 06:35:49,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 06:35:49,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 06:35:49,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 06:35:49,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 06:35:49,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 06:35:49,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 06:35:49,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 06:35:49,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 06:35:49,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:35:49,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 06:35:49,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 06:35:49,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 06:35:49,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 06:35:49,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 06:35:49,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 06:35:49,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 06:35:49,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 06:35:49,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 06:35:49,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67499ec0709cfdcc368630c5b1d94f26157589b8bf16f22cf5d62554760c6dd7 [2021-11-03 06:35:49,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 06:35:49,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 06:35:49,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 06:35:49,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 06:35:49,813 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 06:35:49,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2021-11-03 06:35:49,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6831603d2/43190e0810ed42b39212b83b4bbf75a5/FLAG90e2b9d9f [2021-11-03 06:35:50,335 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 06:35:50,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2021-11-03 06:35:50,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6831603d2/43190e0810ed42b39212b83b4bbf75a5/FLAG90e2b9d9f [2021-11-03 06:35:50,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6831603d2/43190e0810ed42b39212b83b4bbf75a5 [2021-11-03 06:35:50,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 06:35:50,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 06:35:50,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 06:35:50,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 06:35:50,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 06:35:50,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:35:50" (1/1) ... [2021-11-03 06:35:50,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca7f203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:50, skipping insertion in model container [2021-11-03 06:35:50,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 06:35:50" (1/1) ... [2021-11-03 06:35:50,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 06:35:50,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 06:35:50,974 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_SAX_test7-1.i[33021,33034] [2021-11-03 06:35:51,072 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_SAX_test7-1.i[44124,44137] [2021-11-03 06:35:51,075 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_SAX_test7-1.i[44245,44258] [2021-11-03 06:35:51,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:35:51,093 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 06:35:51,118 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_SAX_test7-1.i[33021,33034] [2021-11-03 06:35:51,179 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_SAX_test7-1.i[44124,44137] [2021-11-03 06:35:51,180 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_SAX_test7-1.i[44245,44258] [2021-11-03 06:35:51,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 06:35:51,209 INFO L208 MainTranslator]: Completed translation [2021-11-03 06:35:51,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51 WrapperNode [2021-11-03 06:35:51,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 06:35:51,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 06:35:51,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 06:35:51,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 06:35:51,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 06:35:51,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 06:35:51,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 06:35:51,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 06:35:51,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 06:35:51,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 06:35:51,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 06:35:51,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 06:35:51,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (1/1) ... [2021-11-03 06:35:51,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 06:35:51,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:51,421 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) [2021-11-03 06:35:51,447 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 [2021-11-03 06:35:51,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 06:35:51,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 06:35:51,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 06:35:51,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 06:35:51,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 06:35:51,473 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 06:35:51,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 06:35:51,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 06:35:51,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 06:35:51,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 06:35:51,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 06:35:52,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 06:35:52,048 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-03 06:35:52,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:35:52 BoogieIcfgContainer [2021-11-03 06:35:52,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 06:35:52,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 06:35:52,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 06:35:52,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 06:35:52,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 06:35:50" (1/3) ... [2021-11-03 06:35:52,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bba7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:35:52, skipping insertion in model container [2021-11-03 06:35:52,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 06:35:51" (2/3) ... [2021-11-03 06:35:52,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bba7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 06:35:52, skipping insertion in model container [2021-11-03 06:35:52,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 06:35:52" (3/3) ... [2021-11-03 06:35:52,058 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-1.i [2021-11-03 06:35:52,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 06:35:52,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 06:35:52,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 06:35:52,115 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 [2021-11-03 06:35:52,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 06:35:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 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) [2021-11-03 06:35:52,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 06:35:52,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:52,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:52,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:52,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-03 06:35:52,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:52,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787276541] [2021-11-03 06:35:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:52,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:35:52,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:52,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787276541] [2021-11-03 06:35:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787276541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:52,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:52,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 06:35:52,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114322908] [2021-11-03 06:35:52,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 06:35:52,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 06:35:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 06:35:52,333 INFO L87 Difference]: Start difference. First operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 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) [2021-11-03 06:35:52,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:52,657 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2021-11-03 06:35:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 06:35:52,660 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 [2021-11-03 06:35:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:52,666 INFO L225 Difference]: With dead ends: 361 [2021-11-03 06:35:52,667 INFO L226 Difference]: Without dead ends: 177 [2021-11-03 06:35:52,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 06:35:52,671 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.85ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:52,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 291.85ms Time] [2021-11-03 06:35:52,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-03 06:35:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-03 06:35:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 176 states have internal predecessors, (232), 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) [2021-11-03 06:35:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-03 06:35:52,703 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-03 06:35:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:52,703 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-03 06:35:52,704 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) [2021-11-03 06:35:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-03 06:35:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 06:35:52,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:52,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:52,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 06:35:52,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-03 06:35:52,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:52,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042567503] [2021-11-03 06:35:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:52,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:35:52,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:52,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042567503] [2021-11-03 06:35:52,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042567503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:52,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:52,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:35:52,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938851722] [2021-11-03 06:35:52,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:35:52,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:35:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:35:52,748 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-03 06:35:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:53,393 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2021-11-03 06:35:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:35:53,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-03 06:35:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:53,395 INFO L225 Difference]: With dead ends: 382 [2021-11-03 06:35:53,395 INFO L226 Difference]: Without dead ends: 295 [2021-11-03 06:35:53,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:35:53,396 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 506.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 603.06ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:53,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 722 Unknown, 0 Unchecked, 4.58ms Time], IncrementalHoareTripleChecker [3 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 603.06ms Time] [2021-11-03 06:35:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-03 06:35:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2021-11-03 06:35:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 178 states have internal predecessors, (234), 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) [2021-11-03 06:35:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-11-03 06:35:53,405 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-11-03 06:35:53,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:53,406 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-11-03 06:35:53,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-03 06:35:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-11-03 06:35:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 06:35:53,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:53,408 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:53,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 06:35:53,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-11-03 06:35:53,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:53,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529491872] [2021-11-03 06:35:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:53,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:53,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:35:53,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362908860] [2021-11-03 06:35:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:53,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:35:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:53,425 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) [2021-11-03 06:35:53,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 06:35:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:53,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:35:53,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:35:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:35:53,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:35:53,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:53,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529491872] [2021-11-03 06:35:53,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:35:53,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362908860] [2021-11-03 06:35:53,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362908860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:53,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:53,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:35:53,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476772650] [2021-11-03 06:35:53,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:35:53,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:35:53,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:35:53,716 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:35:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:54,121 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-11-03 06:35:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:35:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-03 06:35:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:54,123 INFO L225 Difference]: With dead ends: 375 [2021-11-03 06:35:54,123 INFO L226 Difference]: Without dead ends: 200 [2021-11-03 06:35:54,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:35:54,124 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 392.96ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:54,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [28 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 392.96ms Time] [2021-11-03 06:35:54,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-03 06:35:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-11-03 06:35:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 197 states have (on average 1.2893401015228427) internal successors, (254), 198 states have internal predecessors, (254), 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) [2021-11-03 06:35:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-11-03 06:35:54,138 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2021-11-03 06:35:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:54,139 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-11-03 06:35:54,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:35:54,139 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-11-03 06:35:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 06:35:54,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:54,143 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:54,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 06:35:54,343 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 [2021-11-03 06:35:54,344 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2021-11-03 06:35:54,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:54,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556480723] [2021-11-03 06:35:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:54,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:54,363 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:35:54,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636512901] [2021-11-03 06:35:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:54,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:35:54,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:54,365 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) [2021-11-03 06:35:54,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 06:35:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:54,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:35:54,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:35:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:35:54,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:35:54,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:54,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556480723] [2021-11-03 06:35:54,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:35:54,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636512901] [2021-11-03 06:35:54,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636512901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:54,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:54,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:35:54,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204632489] [2021-11-03 06:35:54,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:35:54,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:35:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:35:54,617 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:35:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:54,988 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2021-11-03 06:35:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:35:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-03 06:35:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:54,989 INFO L225 Difference]: With dead ends: 386 [2021-11-03 06:35:54,989 INFO L226 Difference]: Without dead ends: 191 [2021-11-03 06:35:54,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:35:54,991 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 220 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 351.96ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:54,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 0 Invalid, 486 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [24 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 351.96ms Time] [2021-11-03 06:35:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-03 06:35:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-11-03 06:35:54,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 183 states have (on average 1.273224043715847) internal successors, (233), 184 states have internal predecessors, (233), 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) [2021-11-03 06:35:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2021-11-03 06:35:54,998 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2021-11-03 06:35:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:54,998 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2021-11-03 06:35:54,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:35:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2021-11-03 06:35:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 06:35:55,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:55,000 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:55,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 06:35:55,200 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 [2021-11-03 06:35:55,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-11-03 06:35:55,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:55,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858847611] [2021-11-03 06:35:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:55,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:55,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:35:55,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605751712] [2021-11-03 06:35:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:55,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:35:55,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:55,218 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) [2021-11-03 06:35:55,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 06:35:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:55,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:35:55,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:35:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:35:55,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:35:55,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:55,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858847611] [2021-11-03 06:35:55,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:35:55,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605751712] [2021-11-03 06:35:55,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605751712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:55,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:55,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:35:55,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473537124] [2021-11-03 06:35:55,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:35:55,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:35:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:35:55,529 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:35:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:55,935 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2021-11-03 06:35:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:35:55,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-03 06:35:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:55,937 INFO L225 Difference]: With dead ends: 479 [2021-11-03 06:35:55,937 INFO L226 Difference]: Without dead ends: 298 [2021-11-03 06:35:55,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:35:55,938 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 317.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.05ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:55,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 495 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [5 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 389.05ms Time] [2021-11-03 06:35:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-03 06:35:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2021-11-03 06:35:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 290 states have internal predecessors, (366), 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) [2021-11-03 06:35:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2021-11-03 06:35:55,945 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2021-11-03 06:35:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:55,946 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2021-11-03 06:35:55,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 06:35:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2021-11-03 06:35:55,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 06:35:55,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:55,947 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:55,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-03 06:35:56,163 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 [2021-11-03 06:35:56,164 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-03 06:35:56,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:56,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528019172] [2021-11-03 06:35:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:56,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:56,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:35:56,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879809992] [2021-11-03 06:35:56,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:56,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:35:56,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:56,190 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) [2021-11-03 06:35:56,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 06:35:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:56,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:35:56,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:35:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 06:35:56,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:35:56,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:56,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528019172] [2021-11-03 06:35:56,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:35:56,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879809992] [2021-11-03 06:35:56,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879809992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:56,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:56,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:35:56,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033033579] [2021-11-03 06:35:56,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:35:56,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:56,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:35:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:35:56,411 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-03 06:35:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:57,157 INFO L93 Difference]: Finished difference Result 536 states and 683 transitions. [2021-11-03 06:35:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:35:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 06:35:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:57,159 INFO L225 Difference]: With dead ends: 536 [2021-11-03 06:35:57,159 INFO L226 Difference]: Without dead ends: 293 [2021-11-03 06:35:57,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:35:57,160 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 675.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 732.86ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:57,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [2 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 732.86ms Time] [2021-11-03 06:35:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-03 06:35:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-03 06:35:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 291 states have (on average 1.2646048109965635) internal successors, (368), 292 states have internal predecessors, (368), 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) [2021-11-03 06:35:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2021-11-03 06:35:57,167 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2021-11-03 06:35:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:57,168 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2021-11-03 06:35:57,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-03 06:35:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2021-11-03 06:35:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 06:35:57,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:57,169 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:57,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 06:35:57,386 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 [2021-11-03 06:35:57,387 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:57,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:57,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1522577957, now seen corresponding path program 1 times [2021-11-03 06:35:57,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:57,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529649581] [2021-11-03 06:35:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:57,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:57,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:35:57,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442457215] [2021-11-03 06:35:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:57,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:35:57,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:57,427 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) [2021-11-03 06:35:57,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 06:35:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:57,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 06:35:57,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:35:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:35:57,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:35:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 06:35:57,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:57,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529649581] [2021-11-03 06:35:57,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:35:57,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442457215] [2021-11-03 06:35:57,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442457215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:35:57,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:35:57,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 06:35:57,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571391729] [2021-11-03 06:35:57,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 06:35:57,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 06:35:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:35:57,767 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2021-11-03 06:35:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:58,214 INFO L93 Difference]: Finished difference Result 544 states and 695 transitions. [2021-11-03 06:35:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 06:35:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 71 [2021-11-03 06:35:58,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:58,216 INFO L225 Difference]: With dead ends: 544 [2021-11-03 06:35:58,216 INFO L226 Difference]: Without dead ends: 299 [2021-11-03 06:35:58,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.37ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 06:35:58,217 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 356.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 429.13ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:58,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 688 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [13 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 429.13ms Time] [2021-11-03 06:35:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-03 06:35:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-11-03 06:35:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 297 states have (on average 1.2592592592592593) internal successors, (374), 298 states have internal predecessors, (374), 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) [2021-11-03 06:35:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 374 transitions. [2021-11-03 06:35:58,223 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 374 transitions. Word has length 71 [2021-11-03 06:35:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:58,223 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 374 transitions. [2021-11-03 06:35:58,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2021-11-03 06:35:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 374 transitions. [2021-11-03 06:35:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 06:35:58,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:58,224 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:58,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 06:35:58,438 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 [2021-11-03 06:35:58,438 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:58,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:58,438 INFO L85 PathProgramCache]: Analyzing trace with hash 784896644, now seen corresponding path program 2 times [2021-11-03 06:35:58,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:58,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776138029] [2021-11-03 06:35:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:58,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:58,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:35:58,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023339590] [2021-11-03 06:35:58,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:35:58,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:35:58,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:58,477 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) [2021-11-03 06:35:58,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 06:35:58,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 06:35:58,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:35:58,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:35:58,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:35:58,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 06:35:58,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-03 06:35:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 06:35:58,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:35:58,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:58,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776138029] [2021-11-03 06:35:58,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:35:58,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023339590] [2021-11-03 06:35:58,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023339590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:58,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:58,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:35:58,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573949265] [2021-11-03 06:35:58,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:35:58,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:35:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:35:58,712 INFO L87 Difference]: Start difference. First operand 299 states and 374 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-03 06:35:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:35:59,257 INFO L93 Difference]: Finished difference Result 387 states and 491 transitions. [2021-11-03 06:35:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:35:59,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 77 [2021-11-03 06:35:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:35:59,259 INFO L225 Difference]: With dead ends: 387 [2021-11-03 06:35:59,259 INFO L226 Difference]: Without dead ends: 383 [2021-11-03 06:35:59,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:35:59,259 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 437.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 523.41ms IncrementalHoareTripleChecker+Time [2021-11-03 06:35:59,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 701 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [3 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 523.41ms Time] [2021-11-03 06:35:59,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-03 06:35:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 301. [2021-11-03 06:35:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 299 states have (on average 1.2575250836120402) internal successors, (376), 300 states have internal predecessors, (376), 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) [2021-11-03 06:35:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 376 transitions. [2021-11-03 06:35:59,277 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 376 transitions. Word has length 77 [2021-11-03 06:35:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:35:59,277 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 376 transitions. [2021-11-03 06:35:59,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-03 06:35:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 376 transitions. [2021-11-03 06:35:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 06:35:59,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:35:59,279 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:35:59,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 06:35:59,493 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 [2021-11-03 06:35:59,493 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:35:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:35:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 819064170, now seen corresponding path program 1 times [2021-11-03 06:35:59,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:35:59,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754229764] [2021-11-03 06:35:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:59,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:35:59,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:35:59,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98036630] [2021-11-03 06:35:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:35:59,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:35:59,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:35:59,512 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) [2021-11-03 06:35:59,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 06:35:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:35:59,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:35:59,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:35:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 06:35:59,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:35:59,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:35:59,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754229764] [2021-11-03 06:35:59,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:35:59,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98036630] [2021-11-03 06:35:59,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98036630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:35:59,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:35:59,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 06:35:59,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669869126] [2021-11-03 06:35:59,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 06:35:59,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:35:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 06:35:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:35:59,769 INFO L87 Difference]: Start difference. First operand 301 states and 376 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-03 06:36:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:36:00,089 INFO L93 Difference]: Finished difference Result 491 states and 635 transitions. [2021-11-03 06:36:00,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 06:36:00,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 111 [2021-11-03 06:36:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:36:00,091 INFO L225 Difference]: With dead ends: 491 [2021-11-03 06:36:00,091 INFO L226 Difference]: Without dead ends: 343 [2021-11-03 06:36:00,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 06:36:00,092 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 248.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 307.72ms IncrementalHoareTripleChecker+Time [2021-11-03 06:36:00,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [28 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 307.72ms Time] [2021-11-03 06:36:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-03 06:36:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2021-11-03 06:36:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 339 states have (on average 1.2271386430678466) internal successors, (416), 340 states have internal predecessors, (416), 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) [2021-11-03 06:36:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 416 transitions. [2021-11-03 06:36:00,099 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 416 transitions. Word has length 111 [2021-11-03 06:36:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:36:00,099 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 416 transitions. [2021-11-03 06:36:00,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-03 06:36:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 416 transitions. [2021-11-03 06:36:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 06:36:00,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:36:00,100 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:36:00,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 06:36:00,300 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 [2021-11-03 06:36:00,301 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:36:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:36:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash 498859118, now seen corresponding path program 1 times [2021-11-03 06:36:00,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:36:00,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054245892] [2021-11-03 06:36:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:00,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:36:00,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:36:00,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72168833] [2021-11-03 06:36:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:00,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:36:00,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:36:00,314 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) [2021-11-03 06:36:00,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 06:36:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:36:00,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 06:36:00,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:36:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 06:36:00,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:36:00,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:36:00,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054245892] [2021-11-03 06:36:00,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:36:00,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72168833] [2021-11-03 06:36:00,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72168833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:36:00,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:36:00,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:36:00,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416116260] [2021-11-03 06:36:00,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:36:00,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:36:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:36:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:36:00,612 INFO L87 Difference]: Start difference. First operand 341 states and 416 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-11-03 06:36:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:36:01,342 INFO L93 Difference]: Finished difference Result 506 states and 630 transitions. [2021-11-03 06:36:01,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:36:01,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 111 [2021-11-03 06:36:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:36:01,344 INFO L225 Difference]: With dead ends: 506 [2021-11-03 06:36:01,344 INFO L226 Difference]: Without dead ends: 318 [2021-11-03 06:36:01,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:36:01,345 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 617.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 711.35ms IncrementalHoareTripleChecker+Time [2021-11-03 06:36:01,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [24 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 711.35ms Time] [2021-11-03 06:36:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-03 06:36:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 313. [2021-11-03 06:36:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 311 states have (on average 1.202572347266881) internal successors, (374), 312 states have internal predecessors, (374), 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) [2021-11-03 06:36:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 374 transitions. [2021-11-03 06:36:01,353 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 374 transitions. Word has length 111 [2021-11-03 06:36:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:36:01,354 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 374 transitions. [2021-11-03 06:36:01,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-11-03 06:36:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 374 transitions. [2021-11-03 06:36:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 06:36:01,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:36:01,355 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:36:01,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 06:36:01,573 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 [2021-11-03 06:36:01,574 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:36:01,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:36:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 1 times [2021-11-03 06:36:01,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:36:01,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969294632] [2021-11-03 06:36:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:01,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:36:01,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:36:01,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707280692] [2021-11-03 06:36:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:01,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:36:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:36:01,589 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) [2021-11-03 06:36:01,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 06:36:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:36:01,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 06:36:01,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:36:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:36:01,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:36:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 06:36:02,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:36:02,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969294632] [2021-11-03 06:36:02,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:36:02,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707280692] [2021-11-03 06:36:02,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707280692] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:36:02,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:36:02,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 06:36:02,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474057571] [2021-11-03 06:36:02,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 06:36:02,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:36:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 06:36:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:36:02,114 INFO L87 Difference]: Start difference. First operand 313 states and 374 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-03 06:36:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:36:02,907 INFO L93 Difference]: Finished difference Result 590 states and 719 transitions. [2021-11-03 06:36:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 06:36:02,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 111 [2021-11-03 06:36:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:36:02,909 INFO L225 Difference]: With dead ends: 590 [2021-11-03 06:36:02,909 INFO L226 Difference]: Without dead ends: 325 [2021-11-03 06:36:02,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.49ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 06:36:02,910 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 610.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 768.03ms IncrementalHoareTripleChecker+Time [2021-11-03 06:36:02,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1127 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [33 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 768.03ms Time] [2021-11-03 06:36:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-03 06:36:02,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-11-03 06:36:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 323 states have (on average 1.195046439628483) internal successors, (386), 324 states have internal predecessors, (386), 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) [2021-11-03 06:36:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 386 transitions. [2021-11-03 06:36:02,918 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 386 transitions. Word has length 111 [2021-11-03 06:36:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:36:02,918 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 386 transitions. [2021-11-03 06:36:02,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-03 06:36:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 386 transitions. [2021-11-03 06:36:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-03 06:36:02,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:36:02,919 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:36:02,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 06:36:03,137 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 [2021-11-03 06:36:03,138 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:36:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:36:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 562680000, now seen corresponding path program 2 times [2021-11-03 06:36:03,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:36:03,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082089593] [2021-11-03 06:36:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:03,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:36:03,161 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:36:03,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356896954] [2021-11-03 06:36:03,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:36:03,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:36:03,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:36:03,173 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) [2021-11-03 06:36:03,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 06:36:03,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:36:03,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:36:03,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 06:36:03,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:36:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:36:03,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:36:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 06:36:03,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:36:03,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082089593] [2021-11-03 06:36:03,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:36:03,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356896954] [2021-11-03 06:36:03,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356896954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:36:03,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:36:03,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-03 06:36:03,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430435813] [2021-11-03 06:36:03,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 06:36:03,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:36:03,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 06:36:03,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:36:03,941 INFO L87 Difference]: Start difference. First operand 325 states and 386 transitions. Second operand has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 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) [2021-11-03 06:36:05,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 06:36:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:36:05,703 INFO L93 Difference]: Finished difference Result 626 states and 767 transitions. [2021-11-03 06:36:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 06:36:05,704 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 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 123 [2021-11-03 06:36:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:36:05,705 INFO L225 Difference]: With dead ends: 626 [2021-11-03 06:36:05,705 INFO L226 Difference]: Without dead ends: 349 [2021-11-03 06:36:05,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 219.29ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 06:36:05,706 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1582.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1729.14ms IncrementalHoareTripleChecker+Time [2021-11-03 06:36:05,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1198 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [80 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1729.14ms Time] [2021-11-03 06:36:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-03 06:36:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2021-11-03 06:36:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 347 states have (on average 1.181556195965418) internal successors, (410), 348 states have internal predecessors, (410), 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) [2021-11-03 06:36:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 410 transitions. [2021-11-03 06:36:05,713 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 410 transitions. Word has length 123 [2021-11-03 06:36:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:36:05,714 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 410 transitions. [2021-11-03 06:36:05,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 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) [2021-11-03 06:36:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 410 transitions. [2021-11-03 06:36:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-03 06:36:05,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:36:05,715 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:36:05,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 06:36:05,933 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 [2021-11-03 06:36:05,933 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:36:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:36:05,933 INFO L85 PathProgramCache]: Analyzing trace with hash -27956736, now seen corresponding path program 3 times [2021-11-03 06:36:05,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:36:05,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54653425] [2021-11-03 06:36:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:05,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:36:05,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:36:05,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746163342] [2021-11-03 06:36:05,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:36:05,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:36:05,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:36:05,947 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) [2021-11-03 06:36:05,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 06:36:06,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 06:36:06,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:36:06,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 06:36:06,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:36:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-03 06:36:06,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 06:36:06,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:36:06,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54653425] [2021-11-03 06:36:06,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:36:06,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746163342] [2021-11-03 06:36:06,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746163342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 06:36:06,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 06:36:06,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 06:36:06,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402008236] [2021-11-03 06:36:06,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 06:36:06,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:36:06,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 06:36:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 06:36:06,342 INFO L87 Difference]: Start difference. First operand 349 states and 410 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-03 06:36:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:36:06,755 INFO L93 Difference]: Finished difference Result 741 states and 878 transitions. [2021-11-03 06:36:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 06:36:06,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 147 [2021-11-03 06:36:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:36:06,758 INFO L225 Difference]: With dead ends: 741 [2021-11-03 06:36:06,758 INFO L226 Difference]: Without dead ends: 440 [2021-11-03 06:36:06,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 06:36:06,758 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 414 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 393.39ms IncrementalHoareTripleChecker+Time [2021-11-03 06:36:06,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 0 Invalid, 442 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [4 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 393.39ms Time] [2021-11-03 06:36:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-03 06:36:06,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 433. [2021-11-03 06:36:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 431 states have (on average 1.1925754060324827) internal successors, (514), 432 states have internal predecessors, (514), 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) [2021-11-03 06:36:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 514 transitions. [2021-11-03 06:36:06,768 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 514 transitions. Word has length 147 [2021-11-03 06:36:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:36:06,768 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 514 transitions. [2021-11-03 06:36:06,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-03 06:36:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 514 transitions. [2021-11-03 06:36:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-03 06:36:06,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:36:06,769 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:36:06,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 06:36:06,986 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 [2021-11-03 06:36:06,986 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:36:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:36:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash -535720422, now seen corresponding path program 1 times [2021-11-03 06:36:06,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:36:06,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472599924] [2021-11-03 06:36:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:06,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:36:06,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:36:06,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898195725] [2021-11-03 06:36:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:06,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:36:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:36:06,998 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) [2021-11-03 06:36:06,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 06:36:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 06:36:07,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 06:36:07,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:36:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:36:07,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:36:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 06:36:08,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:36:08,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472599924] [2021-11-03 06:36:08,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:36:08,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898195725] [2021-11-03 06:36:08,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898195725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:36:08,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:36:08,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-03 06:36:08,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393086056] [2021-11-03 06:36:08,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 06:36:08,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:36:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 06:36:08,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:36:08,520 INFO L87 Difference]: Start difference. First operand 433 states and 514 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-03 06:36:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:36:09,619 INFO L93 Difference]: Finished difference Result 837 states and 1037 transitions. [2021-11-03 06:36:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 06:36:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 154 [2021-11-03 06:36:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:36:09,621 INFO L225 Difference]: With dead ends: 837 [2021-11-03 06:36:09,621 INFO L226 Difference]: Without dead ends: 477 [2021-11-03 06:36:09,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 902.03ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 06:36:09,623 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 894.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1045.70ms IncrementalHoareTripleChecker+Time [2021-11-03 06:36:09,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1400 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [236 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1045.70ms Time] [2021-11-03 06:36:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-03 06:36:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2021-11-03 06:36:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.174736842105263) internal successors, (558), 476 states have internal predecessors, (558), 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) [2021-11-03 06:36:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 558 transitions. [2021-11-03 06:36:09,632 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 558 transitions. Word has length 154 [2021-11-03 06:36:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:36:09,632 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 558 transitions. [2021-11-03 06:36:09,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-03 06:36:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 558 transitions. [2021-11-03 06:36:09,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-03 06:36:09,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:36:09,634 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:36:09,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 06:36:09,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 06:36:09,848 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:36:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:36:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1925067386, now seen corresponding path program 2 times [2021-11-03 06:36:09,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:36:09,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440750151] [2021-11-03 06:36:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:09,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:36:09,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:36:09,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698503284] [2021-11-03 06:36:09,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 06:36:09,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:36:09,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:36:09,863 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:36:09,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 06:36:10,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 06:36:10,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 06:36:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 06:36:10,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 06:36:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-03 06:36:11,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 06:36:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-03 06:36:14,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 06:36:14,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440750151] [2021-11-03 06:36:14,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 06:36:14,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698503284] [2021-11-03 06:36:14,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698503284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 06:36:14,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 06:36:14,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-03 06:36:14,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697855566] [2021-11-03 06:36:14,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-03 06:36:14,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 06:36:14,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-03 06:36:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:36:14,320 INFO L87 Difference]: Start difference. First operand 477 states and 558 transitions. Second operand has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 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) [2021-11-03 06:36:15,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 06:36:15,197 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2021-11-03 06:36:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 06:36:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 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 198 [2021-11-03 06:36:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 06:36:15,207 INFO L225 Difference]: With dead ends: 858 [2021-11-03 06:36:15,208 INFO L226 Difference]: Without dead ends: 523 [2021-11-03 06:36:15,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3581.54ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 06:36:15,210 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 644.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 802.75ms IncrementalHoareTripleChecker+Time [2021-11-03 06:36:15,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1419 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [209 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 802.75ms Time] [2021-11-03 06:36:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-03 06:36:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2021-11-03 06:36:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 521 states have (on average 1.1593090211132437) internal successors, (604), 522 states have internal predecessors, (604), 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) [2021-11-03 06:36:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 604 transitions. [2021-11-03 06:36:15,221 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 604 transitions. Word has length 198 [2021-11-03 06:36:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 06:36:15,221 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 604 transitions. [2021-11-03 06:36:15,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 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) [2021-11-03 06:36:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 604 transitions. [2021-11-03 06:36:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-03 06:36:15,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 06:36:15,223 INFO L514 BasicCegarLoop]: trace histogram [90, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 06:36:15,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 06:36:15,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 06:36:15,440 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 06:36:15,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 06:36:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1358050298, now seen corresponding path program 3 times [2021-11-03 06:36:15,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 06:36:15,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869039328] [2021-11-03 06:36:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 06:36:15,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 06:36:15,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 06:36:15,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791538572] [2021-11-03 06:36:15,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 06:36:15,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 06:36:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 06:36:15,464 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 06:36:15,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15