./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.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_SAX_test4-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:36:56,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:36:56,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:36:56,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:36:56,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:36:56,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:36:56,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:36:56,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:36:56,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:36:56,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:36:56,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:36:56,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:36:56,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:36:56,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:36:56,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:36:56,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:36:56,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:36:56,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:36:56,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:36:56,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:36:56,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:36:56,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:36:56,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:36:56,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:36:56,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:36:56,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:36:56,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:36:56,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:36:56,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:36:56,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:36:56,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:36:56,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:36:56,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:36:56,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:36:56,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:36:56,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:36:56,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:36:56,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:36:56,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:36:56,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:36:56,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:36:56,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:36:56,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:36:56,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:36:56,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:36:56,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:36:56,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:36:56,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:36:56,760 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:36:56,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:36:56,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:36:56,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:36:56,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:36:56,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:36:56,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:36:56,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:36:56,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:36:56,772 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:36:56,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:36:56,772 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:36:56,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:36:56,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:36:56,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:36:56,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:36:56,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:36:56,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:36:56,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:36:56,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:36:56,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:36:56,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:36:56,774 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:36:56,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:36:56,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:36:56,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:36:56,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2021-11-07 22:36:56,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:36:56,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:36:56,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:36:56,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:36:56,965 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:36:56,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-07 22:36:57,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b42920d4/5f5d75b3d3744e9ab2bb24f045dd4cff/FLAGf8c26f94e [2021-11-07 22:36:57,494 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:36:57,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-07 22:36:57,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b42920d4/5f5d75b3d3744e9ab2bb24f045dd4cff/FLAGf8c26f94e [2021-11-07 22:36:57,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b42920d4/5f5d75b3d3744e9ab2bb24f045dd4cff [2021-11-07 22:36:57,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:36:57,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:36:57,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:36:57,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:36:57,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:36:57,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:36:57" (1/1) ... [2021-11-07 22:36:57,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ada4eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:57, skipping insertion in model container [2021-11-07 22:36:57,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:36:57" (1/1) ... [2021-11-07 22:36:57,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:36:57,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:36:57,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-07 22:36:57,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:36:57,992 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:36:58,010 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-07 22:36:58,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:36:58,129 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:36:58,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58 WrapperNode [2021-11-07 22:36:58,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:36:58,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:36:58,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:36:58,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:36:58,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:36:58,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:36:58,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:36:58,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:36:58,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:36:58,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:36:58,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:36:58,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:36:58,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (1/1) ... [2021-11-07 22:36:58,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:36:58,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:36:58,317 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 22:36:58,334 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 22:36:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:36:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:36:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:36:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:36:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:36:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:36:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:36:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:36:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:36:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:36:59,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:36:59,602 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-07 22:36:59,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:36:59 BoogieIcfgContainer [2021-11-07 22:36:59,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:36:59,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:36:59,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:36:59,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:36:59,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:36:57" (1/3) ... [2021-11-07 22:36:59,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676ba7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:36:59, skipping insertion in model container [2021-11-07 22:36:59,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:36:58" (2/3) ... [2021-11-07 22:36:59,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676ba7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:36:59, skipping insertion in model container [2021-11-07 22:36:59,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:36:59" (3/3) ... [2021-11-07 22:36:59,611 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-3.i [2021-11-07 22:36:59,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:36:59,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 22:36:59,656 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:36:59,660 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 22:36:59,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 22:36:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:36:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:36:59,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:36:59,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:36:59,678 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 22:36:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:36:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-07 22:36:59,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:36:59,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175422162] [2021-11-07 22:36:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:36:59,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:36:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:36:59,834 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 22:36:59,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:36:59,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175422162] [2021-11-07 22:36:59,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175422162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:36:59,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:36:59,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:36:59,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606214460] [2021-11-07 22:36:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:36:59,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:36:59,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:36:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:36:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:36:59,877 INFO L87 Difference]: Start difference. First operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:36:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:36:59,925 INFO L93 Difference]: Finished difference Result 540 states and 896 transitions. [2021-11-07 22:36:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:36:59,927 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 22:36:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:36:59,939 INFO L225 Difference]: With dead ends: 540 [2021-11-07 22:36:59,939 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 22:36:59,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:36:59,949 INFO L933 BasicCegarLoop]: 355 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, 355 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:36:59,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:36:59,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 22:36:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 22:37:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-07 22:37:00,007 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-07 22:37:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:00,007 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-07 22:37:00,007 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 22:37:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-07 22:37:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:37:00,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:00,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:37:00,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:37:00,009 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 22:37:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-07 22:37:00,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:00,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40086719] [2021-11-07 22:37:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:00,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:00,092 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 22:37:00,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:00,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40086719] [2021-11-07 22:37:00,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40086719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:00,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:00,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:00,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994760901] [2021-11-07 22:37:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:00,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:00,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:00,096 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:00,140 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-07 22:37:00,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:00,141 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 22:37:00,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:00,144 INFO L225 Difference]: With dead ends: 432 [2021-11-07 22:37:00,145 INFO L226 Difference]: Without dead ends: 387 [2021-11-07 22:37:00,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:00,146 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 223 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.92ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:00,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 556 Invalid, 7 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 11.92ms Time] [2021-11-07 22:37:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-07 22:37:00,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-07 22:37:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3605769230769231) internal successors, (283), 217 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-07 22:37:00,161 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-07 22:37:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:00,161 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-07 22:37:00,161 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 22:37:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-07 22:37:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 22:37:00,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:00,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:00,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:37:00,165 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 22:37:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-07 22:37:00,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:00,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842348829] [2021-11-07 22:37:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:00,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:00,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:00,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473872753] [2021-11-07 22:37:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:00,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:00,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:00,229 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 22:37:00,242 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 22:37:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:00,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:00,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:00,608 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 22:37:00,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:00,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:00,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842348829] [2021-11-07 22:37:00,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:00,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473872753] [2021-11-07 22:37:00,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473872753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:00,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:00,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:00,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289053018] [2021-11-07 22:37:00,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:00,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:00,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:00,611 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:00,658 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-07 22:37:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:00,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 22:37:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:00,660 INFO L225 Difference]: With dead ends: 454 [2021-11-07 22:37:00,660 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 22:37:00,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:00,661 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.09ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:00,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 40.09ms Time] [2021-11-07 22:37:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 22:37:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-07 22:37:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 237 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-07 22:37:00,668 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-07 22:37:00,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:00,668 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-07 22:37:00,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-07 22:37:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 22:37:00,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:00,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:00,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:00,880 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 22:37:00,880 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 22:37:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:00,881 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-07 22:37:00,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:00,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948772211] [2021-11-07 22:37:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:00,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:00,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:00,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132988561] [2021-11-07 22:37:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:00,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:00,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:00,908 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 22:37:00,949 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 22:37:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:01,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:01,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:01,367 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 22:37:01,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:01,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:01,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948772211] [2021-11-07 22:37:01,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:01,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132988561] [2021-11-07 22:37:01,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132988561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:01,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:01,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:01,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269980487] [2021-11-07 22:37:01,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:01,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:01,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:01,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:01,377 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:01,434 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-07 22:37:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:01,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 22:37:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:01,436 INFO L225 Difference]: With dead ends: 494 [2021-11-07 22:37:01,436 INFO L226 Difference]: Without dead ends: 259 [2021-11-07 22:37:01,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:01,437 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.50ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:01,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 45.50ms Time] [2021-11-07 22:37:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-07 22:37:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-07 22:37:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.3024193548387097) internal successors, (323), 257 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-07 22:37:01,443 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-07 22:37:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:01,443 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-07 22:37:01,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-07 22:37:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 22:37:01,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:01,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:01,465 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 22:37:01,659 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 22:37:01,660 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 22:37:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-07 22:37:01,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:01,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740019174] [2021-11-07 22:37:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:01,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:01,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:01,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903686760] [2021-11-07 22:37:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:01,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:01,676 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 22:37:01,678 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 22:37:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:01,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:01,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:02,010 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 22:37:02,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:02,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:02,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740019174] [2021-11-07 22:37:02,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:02,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903686760] [2021-11-07 22:37:02,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903686760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:02,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:02,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:37:02,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581640953] [2021-11-07 22:37:02,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:02,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:37:02,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:37:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:02,013 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:02,086 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-07 22:37:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:37:02,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 22:37:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:02,088 INFO L225 Difference]: With dead ends: 505 [2021-11-07 22:37:02,088 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 22:37:02,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:37:02,090 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 270 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.77ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:02,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 517 Invalid, 66 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 51.77ms Time] [2021-11-07 22:37:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 22:37:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-07 22:37:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 243 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-07 22:37:02,102 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-07 22:37:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:02,103 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-07 22:37:02,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-07 22:37:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 22:37:02,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:02,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:02,129 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 22:37:02,312 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 22:37:02,312 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 22:37:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:02,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-07 22:37:02,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:02,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886371044] [2021-11-07 22:37:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:02,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:02,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:02,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981891490] [2021-11-07 22:37:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:02,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:02,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:02,328 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 22:37:02,333 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 22:37:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:02,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:02,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:02,687 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 22:37:02,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:02,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:02,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886371044] [2021-11-07 22:37:02,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:02,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981891490] [2021-11-07 22:37:02,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981891490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:02,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:02,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:37:02,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058037426] [2021-11-07 22:37:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:02,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:37:02,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:37:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:02,690 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:02,749 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-07 22:37:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:37:02,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 22:37:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:02,750 INFO L225 Difference]: With dead ends: 566 [2021-11-07 22:37:02,751 INFO L226 Difference]: Without dead ends: 325 [2021-11-07 22:37:02,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:37:02,752 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 263 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.02ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:02,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 812 Invalid, 66 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 46.02ms Time] [2021-11-07 22:37:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-07 22:37:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-07 22:37:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 229 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-07 22:37:02,757 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-07 22:37:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:02,757 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-07 22:37:02,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-07 22:37:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 22:37:02,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:02,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:02,781 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 22:37:02,971 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 22:37:02,971 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 22:37:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-07 22:37:02,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:02,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348742860] [2021-11-07 22:37:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:02,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:02,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:02,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760060134] [2021-11-07 22:37:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:02,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:02,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:02,998 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 22:37:03,008 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 22:37:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:03,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:03,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:03,354 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 22:37:03,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:37:03,556 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 22:37:03,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:03,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348742860] [2021-11-07 22:37:03,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:03,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760060134] [2021-11-07 22:37:03,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760060134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:37:03,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:37:03,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 22:37:03,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884929559] [2021-11-07 22:37:03,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:37:03,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:37:03,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:37:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:37:03,558 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 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 22:37:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:03,597 INFO L93 Difference]: Finished difference Result 821 states and 1005 transitions. [2021-11-07 22:37:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 22:37:03,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 22:37:03,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:03,618 INFO L225 Difference]: With dead ends: 821 [2021-11-07 22:37:03,618 INFO L226 Difference]: Without dead ends: 776 [2021-11-07 22:37:03,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.58ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:37:03,619 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 948 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.04ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:03,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 1054 Invalid, 20 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 20.04ms Time] [2021-11-07 22:37:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-07 22:37:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-07 22:37:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 766 states have (on average 1.2362924281984333) internal successors, (947), 775 states have internal predecessors, (947), 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 22:37:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 947 transitions. [2021-11-07 22:37:03,633 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 947 transitions. Word has length 106 [2021-11-07 22:37:03,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:03,634 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 947 transitions. [2021-11-07 22:37:03,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 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 22:37:03,634 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 947 transitions. [2021-11-07 22:37:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-07 22:37:03,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:03,650 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, 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 22:37:03,671 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 22:37:03,851 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 22:37:03,851 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 22:37:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1181109906, now seen corresponding path program 2 times [2021-11-07 22:37:03,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:03,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329173544] [2021-11-07 22:37:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:03,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:03,868 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:03,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127646129] [2021-11-07 22:37:03,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:37:03,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:03,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:03,870 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 22:37:03,871 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 22:37:04,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:37:04,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:37:04,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 22:37:04,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-11-07 22:37:05,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:05,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:05,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329173544] [2021-11-07 22:37:05,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:05,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127646129] [2021-11-07 22:37:05,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127646129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:05,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:05,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:37:05,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912735824] [2021-11-07 22:37:05,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:05,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:37:05,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:05,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:37:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:05,577 INFO L87 Difference]: Start difference. First operand 776 states and 947 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:05,831 INFO L93 Difference]: Finished difference Result 1405 states and 1719 transitions. [2021-11-07 22:37:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2021-11-07 22:37:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:05,834 INFO L225 Difference]: With dead ends: 1405 [2021-11-07 22:37:05,834 INFO L226 Difference]: Without dead ends: 774 [2021-11-07 22:37:05,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.70ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:05,836 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 75 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 206.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 235.25ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:05,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 726 Invalid, 68 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 235.25ms Time] [2021-11-07 22:37:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-07 22:37:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-11-07 22:37:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.2356020942408377) internal successors, (944), 773 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-07 22:37:05,850 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 400 [2021-11-07 22:37:05,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:05,850 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-07 22:37:05,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:37:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-07 22:37:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-07 22:37:05,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:05,855 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, 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 22:37:05,875 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 22:37:06,067 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 22:37:06,068 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 22:37:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 1 times [2021-11-07 22:37:06,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:06,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750959568] [2021-11-07 22:37:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:06,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:06,085 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:06,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063154129] [2021-11-07 22:37:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:06,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:06,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:06,086 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 22:37:06,087 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 22:37:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:06,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 22:37:06,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:07,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:37:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:07,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:07,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750959568] [2021-11-07 22:37:07,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:07,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063154129] [2021-11-07 22:37:07,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063154129] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:37:07,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:37:07,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 22:37:07,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109589805] [2021-11-07 22:37:07,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:37:07,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 22:37:07,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 22:37:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:37:07,845 INFO L87 Difference]: Start difference. First operand 774 states and 944 transitions. Second operand has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 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 22:37:07,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:07,961 INFO L93 Difference]: Finished difference Result 1911 states and 2337 transitions. [2021-11-07 22:37:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 22:37:07,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2021-11-07 22:37:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:07,968 INFO L225 Difference]: With dead ends: 1911 [2021-11-07 22:37:07,969 INFO L226 Difference]: Without dead ends: 1866 [2021-11-07 22:37:07,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.79ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:37:07,971 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 3587 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3587 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.87ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:07,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3587 Valid, 2296 Invalid, 43 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 44.87ms Time] [2021-11-07 22:37:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-11-07 22:37:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1866. [2021-11-07 22:37:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1856 states have (on average 1.2262931034482758) internal successors, (2276), 1865 states have internal predecessors, (2276), 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 22:37:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2276 transitions. [2021-11-07 22:37:08,006 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2276 transitions. Word has length 407 [2021-11-07 22:37:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:08,008 INFO L470 AbstractCegarLoop]: Abstraction has 1866 states and 2276 transitions. [2021-11-07 22:37:08,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 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 22:37:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2276 transitions. [2021-11-07 22:37:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-11-07 22:37:08,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:08,027 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, 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 22:37:08,047 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 22:37:08,241 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 22:37:08,241 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 22:37:08,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash -267019748, now seen corresponding path program 2 times [2021-11-07 22:37:08,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:08,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105357392] [2021-11-07 22:37:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:08,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:08,269 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:08,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291845457] [2021-11-07 22:37:08,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:37:08,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:08,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:08,271 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 22:37:08,272 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 22:37:08,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:37:08,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:37:08,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:37:08,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4077 trivial. 0 not checked. [2021-11-07 22:37:10,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:10,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:10,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105357392] [2021-11-07 22:37:10,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:10,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291845457] [2021-11-07 22:37:10,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291845457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:10,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:10,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:10,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002583984] [2021-11-07 22:37:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:10,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:10,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:10,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:10,135 INFO L87 Difference]: Start difference. First operand 1866 states and 2276 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 22:37:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:10,181 INFO L93 Difference]: Finished difference Result 3674 states and 4486 transitions. [2021-11-07 22:37:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 995 [2021-11-07 22:37:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:10,188 INFO L225 Difference]: With dead ends: 3674 [2021-11-07 22:37:10,188 INFO L226 Difference]: Without dead ends: 1864 [2021-11-07 22:37:10,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:10,191 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 19 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.17ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:10,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 27.17ms Time] [2021-11-07 22:37:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-11-07 22:37:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1864. [2021-11-07 22:37:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1854 states have (on average 1.225997842502697) internal successors, (2273), 1863 states have internal predecessors, (2273), 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 22:37:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2273 transitions. [2021-11-07 22:37:10,223 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2273 transitions. Word has length 995 [2021-11-07 22:37:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:10,224 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 2273 transitions. [2021-11-07 22:37:10,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 22:37:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2273 transitions. [2021-11-07 22:37:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2021-11-07 22:37:10,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:10,249 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, 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, 9, 9, 9, 1, 1, 1, 1, 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 22:37:10,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:10,458 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 22:37:10,459 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 22:37:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 791199788, now seen corresponding path program 1 times [2021-11-07 22:37:10,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:10,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035217311] [2021-11-07 22:37:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:10,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:10,487 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:10,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776775351] [2021-11-07 22:37:10,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:10,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:10,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:10,488 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 22:37:10,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15