./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_FNV_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 21:12:27,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 21:12:27,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 21:12:27,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 21:12:27,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 21:12:27,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 21:12:27,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 21:12:27,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 21:12:27,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 21:12:27,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 21:12:27,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 21:12:27,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 21:12:27,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 21:12:27,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 21:12:27,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 21:12:27,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 21:12:27,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 21:12:27,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 21:12:27,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 21:12:27,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 21:12:27,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 21:12:27,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 21:12:27,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 21:12:27,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 21:12:27,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 21:12:27,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 21:12:27,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 21:12:27,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 21:12:27,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 21:12:27,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 21:12:27,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 21:12:27,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 21:12:27,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 21:12:27,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 21:12:27,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 21:12:27,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 21:12:27,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 21:12:27,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 21:12:27,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 21:12:27,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 21:12:27,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 21:12:27,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 21:12:27,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 21:12:27,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 21:12:27,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 21:12:27,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 21:12:27,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 21:12:27,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 21:12:27,808 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 21:12:27,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 21:12:27,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 21:12:27,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 21:12:27,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 21:12:27,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 21:12:27,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 21:12:27,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 21:12:27,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 21:12:27,810 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 21:12:27,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 21:12:27,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 21:12:27,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 21:12:27,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 21:12:27,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 21:12:27,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 21:12:27,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 21:12:27,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 21:12:27,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 21:12:27,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 21:12:27,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 21:12:27,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 21:12:27,813 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 21:12:27,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 21:12:27,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 21:12:27,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 21:12:27,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 [2021-11-07 21:12:27,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 21:12:28,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 21:12:28,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 21:12:28,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 21:12:28,018 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 21:12:28,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-11-07 21:12:28,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272a5b38a/4f5176e5606e4c1a89f9b453f448a638/FLAGada448efa [2021-11-07 21:12:28,500 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 21:12:28,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-11-07 21:12:28,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272a5b38a/4f5176e5606e4c1a89f9b453f448a638/FLAGada448efa [2021-11-07 21:12:28,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272a5b38a/4f5176e5606e4c1a89f9b453f448a638 [2021-11-07 21:12:28,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 21:12:28,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 21:12:28,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 21:12:28,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 21:12:28,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 21:12:28,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:28" (1/1) ... [2021-11-07 21:12:28,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1008147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:28, skipping insertion in model container [2021-11-07 21:12:28,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:28" (1/1) ... [2021-11-07 21:12:28,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 21:12:28,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 21:12:29,262 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_FNV_test1-2.i[33021,33034] [2021-11-07 21:12:29,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 21:12:29,354 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 21:12:29,375 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_FNV_test1-2.i[33021,33034] [2021-11-07 21:12:29,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 21:12:29,465 INFO L208 MainTranslator]: Completed translation [2021-11-07 21:12:29,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29 WrapperNode [2021-11-07 21:12:29,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 21:12:29,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 21:12:29,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 21:12:29,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 21:12:29,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 21:12:29,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 21:12:29,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 21:12:29,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 21:12:29,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 21:12:29,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 21:12:29,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 21:12:29,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 21:12:29,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (1/1) ... [2021-11-07 21:12:29,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 21:12:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:12:29,700 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) [2021-11-07 21:12:29,712 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 [2021-11-07 21:12:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 21:12:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 21:12:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 21:12:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 21:12:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 21:12:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 21:12:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 21:12:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 21:12:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 21:12:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 21:12:30,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 21:12:30,537 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 21:12:30,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:30 BoogieIcfgContainer [2021-11-07 21:12:30,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 21:12:30,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 21:12:30,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 21:12:30,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 21:12:30,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:12:28" (1/3) ... [2021-11-07 21:12:30,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e70dd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:30, skipping insertion in model container [2021-11-07 21:12:30,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29" (2/3) ... [2021-11-07 21:12:30,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e70dd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:30, skipping insertion in model container [2021-11-07 21:12:30,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:30" (3/3) ... [2021-11-07 21:12:30,546 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-2.i [2021-11-07 21:12:30,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 21:12:30,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 21:12:30,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 21:12:30,603 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 [2021-11-07 21:12:30,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 21:12:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 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) [2021-11-07 21:12:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 21:12:30,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:30,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:30,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-07 21:12:30,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:30,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875859732] [2021-11-07 21:12:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:30,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:12:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:30,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:12:30,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875859732] [2021-11-07 21:12:30,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875859732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:12:30,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:12:30,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 21:12:30,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681655854] [2021-11-07 21:12:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:12:30,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 21:12:30,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:12:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 21:12:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 21:12:30,789 INFO L87 Difference]: Start difference. First operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 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) [2021-11-07 21:12:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:12:30,838 INFO L93 Difference]: Finished difference Result 332 states and 538 transitions. [2021-11-07 21:12:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 21:12:30,840 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 [2021-11-07 21:12:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:12:30,850 INFO L225 Difference]: With dead ends: 332 [2021-11-07 21:12:30,851 INFO L226 Difference]: Without dead ends: 134 [2021-11-07 21:12:30,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 21:12:30,857 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 21:12:30,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 21:12:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-07 21:12:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-07 21:12:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 133 states have internal predecessors, (172), 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) [2021-11-07 21:12:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-07 21:12:30,902 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-07 21:12:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:12:30,903 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-07 21:12:30,903 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) [2021-11-07 21:12:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-07 21:12:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 21:12:30,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:30,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:30,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 21:12:30,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:30,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:30,907 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-07 21:12:30,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:30,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521662380] [2021-11-07 21:12:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:30,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:12:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:30,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:12:30,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521662380] [2021-11-07 21:12:30,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521662380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:12:30,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:12:30,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:12:30,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691394548] [2021-11-07 21:12:30,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:12:30,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:12:30,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:12:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:12:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:12:30,988 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:12:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:12:31,030 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-07 21:12:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:12:31,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 21:12:31,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:12:31,035 INFO L225 Difference]: With dead ends: 266 [2021-11-07 21:12:31,035 INFO L226 Difference]: Without dead ends: 221 [2021-11-07 21:12:31,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:12:31,039 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 113 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.23ms IncrementalHoareTripleChecker+Time [2021-11-07 21:12:31,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 18.23ms Time] [2021-11-07 21:12:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-07 21:12:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-07 21:12:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 125 states have (on average 1.384) internal successors, (173), 134 states have internal predecessors, (173), 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) [2021-11-07 21:12:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-07 21:12:31,054 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 8 [2021-11-07 21:12:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:12:31,055 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-07 21:12:31,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:12:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-07 21:12:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 21:12:31,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:31,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:31,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 21:12:31,061 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:31,061 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-07 21:12:31,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:31,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983066726] [2021-11-07 21:12:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:31,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:31,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:12:31,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645006345] [2021-11-07 21:12:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:31,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:12:31,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:12:31,107 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) [2021-11-07 21:12:31,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 21:12:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:12:31,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:12:31,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:12:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:31,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:12:31,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:12:31,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983066726] [2021-11-07 21:12:31,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:12:31,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645006345] [2021-11-07 21:12:31,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645006345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:12:31,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:12:31,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:12:31,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999933991] [2021-11-07 21:12:31,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:12:31,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:12:31,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:12:31,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:12:31,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:12:31,432 INFO L87 Difference]: Start difference. First operand 135 states and 173 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 21:12:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:12:31,511 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-07 21:12:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:12:31,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-07 21:12:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:12:31,513 INFO L225 Difference]: With dead ends: 288 [2021-11-07 21:12:31,513 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 21:12:31,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:12:31,519 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.31ms IncrementalHoareTripleChecker+Time [2021-11-07 21:12:31,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 289 Invalid, 72 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 51.31ms Time] [2021-11-07 21:12:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 21:12:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-07 21:12:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 154 states have internal predecessors, (193), 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) [2021-11-07 21:12:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2021-11-07 21:12:31,535 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 59 [2021-11-07 21:12:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:12:31,536 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2021-11-07 21:12:31,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 21:12:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2021-11-07 21:12:31,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 21:12:31,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:31,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:31,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 21:12:31,737 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 [2021-11-07 21:12:31,738 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:31,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-07 21:12:31,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:31,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15894772] [2021-11-07 21:12:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:31,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:31,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:12:31,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023155237] [2021-11-07 21:12:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:31,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:12:31,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:12:31,752 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) [2021-11-07 21:12:31,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 21:12:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:12:31,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:12:31,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:12:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:32,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:12:32,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:12:32,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15894772] [2021-11-07 21:12:32,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:12:32,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023155237] [2021-11-07 21:12:32,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023155237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:12:32,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:12:32,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 21:12:32,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082232709] [2021-11-07 21:12:32,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:12:32,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 21:12:32,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:12:32,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 21:12:32,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 21:12:32,015 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 21:12:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:12:32,072 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-07 21:12:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 21:12:32,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-07 21:12:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:12:32,074 INFO L225 Difference]: With dead ends: 299 [2021-11-07 21:12:32,074 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 21:12:32,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 21:12:32,075 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 160 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.87ms IncrementalHoareTripleChecker+Time [2021-11-07 21:12:32,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 297 Invalid, 66 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 45.87ms Time] [2021-11-07 21:12:32,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 21:12:32,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-07 21:12:32,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 140 states have internal predecessors, (172), 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) [2021-11-07 21:12:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-07 21:12:32,081 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 59 [2021-11-07 21:12:32,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:12:32,082 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-07 21:12:32,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 21:12:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-07 21:12:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 21:12:32,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:32,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:32,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 21:12:32,306 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 [2021-11-07 21:12:32,306 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-07 21:12:32,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:32,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537889266] [2021-11-07 21:12:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:32,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:32,318 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:12:32,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55221562] [2021-11-07 21:12:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:32,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:12:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:12:32,320 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) [2021-11-07 21:12:32,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 21:12:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:12:32,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:12:32,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:12:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:32,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 21:12:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:32,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:12:32,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537889266] [2021-11-07 21:12:32,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:12:32,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55221562] [2021-11-07 21:12:32,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55221562] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 21:12:32,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 21:12:32,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 21:12:32,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883967797] [2021-11-07 21:12:32,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 21:12:32,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 21:12:32,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:12:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 21:12:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 21:12:32,792 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2021-11-07 21:12:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:12:32,827 INFO L93 Difference]: Finished difference Result 465 states and 569 transitions. [2021-11-07 21:12:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 21:12:32,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 59 [2021-11-07 21:12:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:12:32,829 INFO L225 Difference]: With dead ends: 465 [2021-11-07 21:12:32,830 INFO L226 Difference]: Without dead ends: 420 [2021-11-07 21:12:32,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.08ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 21:12:32,831 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 636 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.54ms IncrementalHoareTripleChecker+Time [2021-11-07 21:12:32,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 586 Invalid, 20 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 18.54ms Time] [2021-11-07 21:12:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-07 21:12:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2021-11-07 21:12:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 410 states have (on average 1.2463414634146341) internal successors, (511), 419 states have internal predecessors, (511), 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) [2021-11-07 21:12:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 511 transitions. [2021-11-07 21:12:32,844 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 511 transitions. Word has length 59 [2021-11-07 21:12:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:12:32,844 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 511 transitions. [2021-11-07 21:12:32,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2021-11-07 21:12:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 511 transitions. [2021-11-07 21:12:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 21:12:32,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:32,850 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:32,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 21:12:33,063 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 [2021-11-07 21:12:33,063 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash 292771206, now seen corresponding path program 2 times [2021-11-07 21:12:33,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:33,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083107757] [2021-11-07 21:12:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:33,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:33,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:12:33,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665290994] [2021-11-07 21:12:33,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 21:12:33,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:12:33,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:12:33,082 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) [2021-11-07 21:12:33,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 21:12:33,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 21:12:33,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 21:12:33,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 21:12:33,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:12:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-07 21:12:34,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:12:34,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:12:34,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083107757] [2021-11-07 21:12:34,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:12:34,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665290994] [2021-11-07 21:12:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665290994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:12:34,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:12:34,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 21:12:34,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242985022] [2021-11-07 21:12:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:12:34,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 21:12:34,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:12:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 21:12:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 21:12:34,148 INFO L87 Difference]: Start difference. First operand 420 states and 511 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 21:12:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:12:34,286 INFO L93 Difference]: Finished difference Result 782 states and 956 transitions. [2021-11-07 21:12:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:12:34,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 212 [2021-11-07 21:12:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:12:34,288 INFO L225 Difference]: With dead ends: 782 [2021-11-07 21:12:34,288 INFO L226 Difference]: Without dead ends: 418 [2021-11-07 21:12:34,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.93ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 21:12:34,290 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 19 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.63ms IncrementalHoareTripleChecker+Time [2021-11-07 21:12:34,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 443 Invalid, 42 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 123.63ms Time] [2021-11-07 21:12:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-07 21:12:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-11-07 21:12:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 408 states have (on average 1.2450980392156863) internal successors, (508), 417 states have internal predecessors, (508), 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) [2021-11-07 21:12:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2021-11-07 21:12:34,299 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 212 [2021-11-07 21:12:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:12:34,299 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2021-11-07 21:12:34,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-07 21:12:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2021-11-07 21:12:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 21:12:34,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:34,301 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:34,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 21:12:34,527 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 [2021-11-07 21:12:34,528 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash -202059402, now seen corresponding path program 1 times [2021-11-07 21:12:34,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:34,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568131712] [2021-11-07 21:12:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:34,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:34,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:12:34,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170622746] [2021-11-07 21:12:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:34,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:12:34,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:12:34,546 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) [2021-11-07 21:12:34,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 21:12:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:12:34,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 21:12:34,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:12:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:35,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 21:12:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:12:35,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:12:35,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568131712] [2021-11-07 21:12:35,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:12:35,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170622746] [2021-11-07 21:12:35,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170622746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 21:12:35,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 21:12:35,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 21:12:35,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34451498] [2021-11-07 21:12:35,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 21:12:35,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 21:12:35,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:12:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 21:12:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 21:12:35,702 INFO L87 Difference]: Start difference. First operand 418 states and 508 transitions. Second operand has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 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) [2021-11-07 21:12:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:12:35,799 INFO L93 Difference]: Finished difference Result 1021 states and 1247 transitions. [2021-11-07 21:12:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 21:12:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 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 219 [2021-11-07 21:12:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:12:35,807 INFO L225 Difference]: With dead ends: 1021 [2021-11-07 21:12:35,807 INFO L226 Difference]: Without dead ends: 976 [2021-11-07 21:12:35,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.03ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 21:12:35,809 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 2038 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.51ms IncrementalHoareTripleChecker+Time [2021-11-07 21:12:35,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 1210 Invalid, 41 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 43.51ms Time] [2021-11-07 21:12:35,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-07 21:12:35,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2021-11-07 21:12:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 966 states have (on average 1.2277432712215322) internal successors, (1186), 975 states have internal predecessors, (1186), 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) [2021-11-07 21:12:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1186 transitions. [2021-11-07 21:12:35,830 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1186 transitions. Word has length 219 [2021-11-07 21:12:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:12:35,831 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1186 transitions. [2021-11-07 21:12:35,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 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) [2021-11-07 21:12:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1186 transitions. [2021-11-07 21:12:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-07 21:12:35,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:12:35,840 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:12:35,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 21:12:36,055 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 [2021-11-07 21:12:36,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:12:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:12:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1985764010, now seen corresponding path program 2 times [2021-11-07 21:12:36,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:12:36,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115636579] [2021-11-07 21:12:36,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:12:36,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:12:36,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:12:36,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180949681] [2021-11-07 21:12:36,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 21:12:36,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:12:36,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:12:36,080 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) [2021-11-07 21:12:36,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 21:13:36,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 21:13:36,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 21:13:36,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 21:13:36,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:13:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 21:13:37,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:13:37,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:13:37,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115636579] [2021-11-07 21:13:37,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:13:37,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180949681] [2021-11-07 21:13:37,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180949681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:13:37,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:13:37,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:13:37,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441155657] [2021-11-07 21:13:37,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:13:37,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:13:37,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:13:37,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:13:37,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:13:37,521 INFO L87 Difference]: Start difference. First operand 976 states and 1186 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) [2021-11-07 21:13:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:13:37,557 INFO L93 Difference]: Finished difference Result 1912 states and 2336 transitions. [2021-11-07 21:13:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:13:37,558 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 525 [2021-11-07 21:13:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:13:37,561 INFO L225 Difference]: With dead ends: 1912 [2021-11-07 21:13:37,562 INFO L226 Difference]: Without dead ends: 986 [2021-11-07 21:13:37,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:13:37,564 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.83ms IncrementalHoareTripleChecker+Time [2021-11-07 21:13:37,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 17.83ms Time] [2021-11-07 21:13:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-07 21:13:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2021-11-07 21:13:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 976 states have (on average 1.2254098360655739) internal successors, (1196), 985 states have internal predecessors, (1196), 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) [2021-11-07 21:13:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1196 transitions. [2021-11-07 21:13:37,587 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1196 transitions. Word has length 525 [2021-11-07 21:13:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:13:37,588 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1196 transitions. [2021-11-07 21:13:37,588 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) [2021-11-07 21:13:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1196 transitions. [2021-11-07 21:13:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-07 21:13:37,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:13:37,596 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:13:37,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 21:13:37,811 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 [2021-11-07 21:13:37,812 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:13:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:13:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1022272148, now seen corresponding path program 1 times [2021-11-07 21:13:37,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:13:37,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046701721] [2021-11-07 21:13:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:13:37,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:13:37,846 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:13:37,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669126958] [2021-11-07 21:13:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:13:37,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:13:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:13:37,851 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) [2021-11-07 21:13:37,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 21:14:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:14:39,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 21:14:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:14:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2288 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 21:14:39,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:14:39,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:14:39,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046701721] [2021-11-07 21:14:39,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:14:39,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669126958] [2021-11-07 21:14:39,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669126958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:14:39,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:14:39,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:14:39,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003814623] [2021-11-07 21:14:39,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:14:39,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:14:39,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:14:39,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:14:39,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:14:39,738 INFO L87 Difference]: Start difference. First operand 986 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2021-11-07 21:14:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:14:39,768 INFO L93 Difference]: Finished difference Result 1928 states and 2351 transitions. [2021-11-07 21:14:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:14:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 526 [2021-11-07 21:14:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:14:39,772 INFO L225 Difference]: With dead ends: 1928 [2021-11-07 21:14:39,772 INFO L226 Difference]: Without dead ends: 996 [2021-11-07 21:14:39,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:14:39,774 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.59ms IncrementalHoareTripleChecker+Time [2021-11-07 21:14:39,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 14.59ms Time] [2021-11-07 21:14:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-07 21:14:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2021-11-07 21:14:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 986 states have (on average 1.2231237322515214) internal successors, (1206), 995 states have internal predecessors, (1206), 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) [2021-11-07 21:14:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1206 transitions. [2021-11-07 21:14:39,801 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1206 transitions. Word has length 526 [2021-11-07 21:14:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:14:39,801 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1206 transitions. [2021-11-07 21:14:39,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2021-11-07 21:14:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1206 transitions. [2021-11-07 21:14:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2021-11-07 21:14:39,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:14:39,810 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:14:39,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 21:14:40,011 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 [2021-11-07 21:14:40,012 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:14:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:14:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1577277749, now seen corresponding path program 1 times [2021-11-07 21:14:40,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:14:40,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538426016] [2021-11-07 21:14:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:14:40,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:14:40,045 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:14:40,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739680652] [2021-11-07 21:14:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:14:40,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:14:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:14:40,049 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) [2021-11-07 21:14:40,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 21:19:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:19:09,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 21:19:09,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:19:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 21:19:10,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 21:19:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 1 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 21:19:10,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:19:10,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538426016] [2021-11-07 21:19:10,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:19:10,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739680652] [2021-11-07 21:19:10,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739680652] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 21:19:10,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 21:19:10,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2021-11-07 21:19:10,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914377530] [2021-11-07 21:19:10,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 21:19:10,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 21:19:10,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:19:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 21:19:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 21:19:10,928 INFO L87 Difference]: Start difference. First operand 996 states and 1206 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2021-11-07 21:19:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:19:11,079 INFO L93 Difference]: Finished difference Result 3675 states and 4493 transitions. [2021-11-07 21:19:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 21:19:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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 527 [2021-11-07 21:19:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:19:11,089 INFO L225 Difference]: With dead ends: 3675 [2021-11-07 21:19:11,090 INFO L226 Difference]: Without dead ends: 2730 [2021-11-07 21:19:11,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 65.28ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-07 21:19:11,093 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 302 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.31ms IncrementalHoareTripleChecker+Time [2021-11-07 21:19:11,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2271 Invalid, 85 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 62.31ms Time] [2021-11-07 21:19:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-07 21:19:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1036. [2021-11-07 21:19:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1026 states have (on average 1.2144249512670566) internal successors, (1246), 1035 states have internal predecessors, (1246), 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) [2021-11-07 21:19:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1246 transitions. [2021-11-07 21:19:11,131 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1246 transitions. Word has length 527 [2021-11-07 21:19:11,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:19:11,132 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1246 transitions. [2021-11-07 21:19:11,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2021-11-07 21:19:11,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1246 transitions. [2021-11-07 21:19:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-07 21:19:11,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:19:11,136 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:19:11,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 21:19:11,351 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 [2021-11-07 21:19:11,351 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:19:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:19:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1316590250, now seen corresponding path program 2 times [2021-11-07 21:19:11,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:19:11,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702884125] [2021-11-07 21:19:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:19:11,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:19:11,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:19:11,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642552044] [2021-11-07 21:19:11,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 21:19:11,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:19:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:19:11,394 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) [2021-11-07 21:19:11,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 21:20:48,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 21:20:48,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 21:20:48,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 21:20:48,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:20:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 10 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2021-11-07 21:20:49,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 21:20:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 10 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2021-11-07 21:20:50,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:20:50,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702884125] [2021-11-07 21:20:50,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:20:50,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642552044] [2021-11-07 21:20:50,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642552044] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 21:20:50,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 21:20:50,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-11-07 21:20:50,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808924723] [2021-11-07 21:20:50,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 21:20:50,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 21:20:50,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:20:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 21:20:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-07 21:20:50,388 INFO L87 Difference]: Start difference. First operand 1036 states and 1246 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 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) [2021-11-07 21:20:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:20:51,604 INFO L93 Difference]: Finished difference Result 2984 states and 3716 transitions. [2021-11-07 21:20:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 21:20:51,605 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 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 531 [2021-11-07 21:20:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:20:51,611 INFO L225 Difference]: With dead ends: 2984 [2021-11-07 21:20:51,612 INFO L226 Difference]: Without dead ends: 1956 [2021-11-07 21:20:51,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1079 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 687.51ms TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2021-11-07 21:20:51,614 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 809 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 463.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.01ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 546.21ms IncrementalHoareTripleChecker+Time [2021-11-07 21:20:51,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 1374 Invalid, 349 Unknown, 0 Unchecked, 7.01ms Time], IncrementalHoareTripleChecker [69 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 546.21ms Time] [2021-11-07 21:20:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-07 21:20:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1146. [2021-11-07 21:20:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1136 states have (on average 1.193661971830986) internal successors, (1356), 1145 states have internal predecessors, (1356), 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) [2021-11-07 21:20:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1356 transitions. [2021-11-07 21:20:51,664 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1356 transitions. Word has length 531 [2021-11-07 21:20:51,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:20:51,665 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1356 transitions. [2021-11-07 21:20:51,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 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) [2021-11-07 21:20:51,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1356 transitions. [2021-11-07 21:20:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-07 21:20:51,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:20:51,670 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:20:51,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-07 21:20:51,887 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 [2021-11-07 21:20:51,888 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 21:20:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:20:51,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2034509196, now seen corresponding path program 3 times [2021-11-07 21:20:51,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:20:51,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802832692] [2021-11-07 21:20:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:20:51,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:20:51,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:20:51,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110134075] [2021-11-07 21:20:51,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 21:20:51,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:20:51,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:20:51,913 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) [2021-11-07 21:20:51,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process Killed by 15