./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_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_SFH_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 c24ad121bcc9573550d02da9627a07166858762ae4177dec26b10c884148a83b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 23:04:45,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 23:04:45,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 23:04:45,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 23:04:45,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 23:04:45,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 23:04:45,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 23:04:45,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 23:04:45,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 23:04:45,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 23:04:45,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 23:04:45,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 23:04:45,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 23:04:45,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 23:04:45,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 23:04:45,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 23:04:45,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 23:04:45,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 23:04:45,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 23:04:45,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 23:04:45,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 23:04:45,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 23:04:45,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 23:04:45,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 23:04:45,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 23:04:45,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 23:04:45,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 23:04:45,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 23:04:45,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 23:04:45,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 23:04:45,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 23:04:45,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 23:04:45,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 23:04:45,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 23:04:45,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 23:04:45,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 23:04:45,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 23:04:45,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 23:04:45,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 23:04:45,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 23:04:45,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 23:04:45,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 23:04:45,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 23:04:45,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 23:04:45,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 23:04:45,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 23:04:45,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 23:04:45,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 23:04:45,774 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 23:04:45,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 23:04:45,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 23:04:45,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 23:04:45,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 23:04:45,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 23:04:45,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 23:04:45,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 23:04:45,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 23:04:45,776 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 23:04:45,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 23:04:45,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 23:04:45,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 23:04:45,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 23:04:45,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 23:04:45,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 23:04:45,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 23:04:45,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 23:04:45,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 23:04:45,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 23:04:45,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 23:04:45,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 23:04:45,779 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 23:04:45,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 23:04:45,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 23:04:45,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 23:04:45,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c24ad121bcc9573550d02da9627a07166858762ae4177dec26b10c884148a83b [2021-11-07 23:04:45,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 23:04:46,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 23:04:46,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 23:04:46,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 23:04:46,008 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 23:04:46,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i [2021-11-07 23:04:46,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57858b06a/b5c9c08539f34f918e07dc3c94fe8863/FLAG90d58c5ec [2021-11-07 23:04:46,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 23:04:46,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i [2021-11-07 23:04:46,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57858b06a/b5c9c08539f34f918e07dc3c94fe8863/FLAG90d58c5ec [2021-11-07 23:04:46,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57858b06a/b5c9c08539f34f918e07dc3c94fe8863 [2021-11-07 23:04:46,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 23:04:46,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 23:04:46,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 23:04:46,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 23:04:46,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 23:04:46,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:04:46" (1/1) ... [2021-11-07 23:04:46,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30aa6503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:46, skipping insertion in model container [2021-11-07 23:04:46,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:04:46" (1/1) ... [2021-11-07 23:04:46,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 23:04:46,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 23:04:47,304 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_SFH_test4-3.i[33021,33034] [2021-11-07 23:04:47,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 23:04:47,452 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 23:04:47,490 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_SFH_test4-3.i[33021,33034] [2021-11-07 23:04:47,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 23:04:47,573 INFO L208 MainTranslator]: Completed translation [2021-11-07 23:04:47,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47 WrapperNode [2021-11-07 23:04:47,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 23:04:47,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 23:04:47,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 23:04:47,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 23:04:47,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 23:04:47,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 23:04:47,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 23:04:47,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 23:04:47,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 23:04:47,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 23:04:47,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 23:04:47,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 23:04:47,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (1/1) ... [2021-11-07 23:04:47,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 23:04:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:47,872 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 23:04:47,897 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 23:04:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 23:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 23:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 23:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 23:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 23:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 23:04:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 23:04:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 23:04:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 23:04:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 23:04:49,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 23:04:49,228 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-07 23:04:49,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:04:49 BoogieIcfgContainer [2021-11-07 23:04:49,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 23:04:49,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 23:04:49,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 23:04:49,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 23:04:49,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:04:46" (1/3) ... [2021-11-07 23:04:49,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f71d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:04:49, skipping insertion in model container [2021-11-07 23:04:49,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:04:47" (2/3) ... [2021-11-07 23:04:49,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f71d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:04:49, skipping insertion in model container [2021-11-07 23:04:49,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:04:49" (3/3) ... [2021-11-07 23:04:49,238 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-3.i [2021-11-07 23:04:49,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 23:04:49,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 23:04:49,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 23:04:49,296 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 23:04:49,296 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 23:04:49,320 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 23:04:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 23:04:49,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:49,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 23:04:49,333 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 23:04:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:49,337 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-07 23:04:49,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:49,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221243709] [2021-11-07 23:04:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:49,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:49,475 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 23:04:49,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:49,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221243709] [2021-11-07 23:04:49,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221243709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:04:49,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:04:49,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 23:04:49,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898885199] [2021-11-07 23:04:49,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:04:49,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 23:04:49,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:49,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 23:04:49,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 23:04:49,513 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 23:04:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:49,554 INFO L93 Difference]: Finished difference Result 540 states and 896 transitions. [2021-11-07 23:04:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 23:04:49,556 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 23:04:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:49,563 INFO L225 Difference]: With dead ends: 540 [2021-11-07 23:04:49,564 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 23:04:49,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 23:04:49,569 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, 2.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:49,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 23:04:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 23:04:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 23:04:49,623 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 23:04:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-07 23:04:49,629 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-07 23:04:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:49,629 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-07 23:04:49,629 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 23:04:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-07 23:04:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 23:04:49,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:49,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 23:04:49,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 23:04:49,632 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 23:04:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-07 23:04:49,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:49,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166322721] [2021-11-07 23:04:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:49,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:49,705 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 23:04:49,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:49,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166322721] [2021-11-07 23:04:49,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166322721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:04:49,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:04:49,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 23:04:49,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674743176] [2021-11-07 23:04:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:04:49,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 23:04:49,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 23:04:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:04:49,710 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 23:04:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:49,759 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-07 23:04:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 23:04:49,759 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 23:04:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:49,765 INFO L225 Difference]: With dead ends: 432 [2021-11-07 23:04:49,765 INFO L226 Difference]: Without dead ends: 387 [2021-11-07 23:04:49,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:04:49,770 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 223 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.86ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:49,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 556 Invalid, 7 Unknown, 0 Unchecked, 6.12ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 11.86ms Time] [2021-11-07 23:04:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-07 23:04:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-07 23:04:49,796 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 23:04:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-07 23:04:49,797 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-07 23:04:49,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:49,798 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-07 23:04:49,798 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 23:04:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-07 23:04:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 23:04:49,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:49,805 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 23:04:49,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 23:04:49,807 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 23:04:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-07 23:04:49,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:49,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756948957] [2021-11-07 23:04:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:49,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:49,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:49,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988243676] [2021-11-07 23:04:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:49,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:49,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:49,855 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 23:04:49,880 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 23:04:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:50,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 23:04:50,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:50,302 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 23:04:50,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 23:04:50,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:50,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756948957] [2021-11-07 23:04:50,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:04:50,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988243676] [2021-11-07 23:04:50,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988243676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:04:50,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:04:50,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 23:04:50,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39467093] [2021-11-07 23:04:50,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:04:50,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 23:04:50,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 23:04:50,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:04:50,306 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 23:04:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:50,372 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-07 23:04:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 23:04:50,372 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 23:04:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:50,373 INFO L225 Difference]: With dead ends: 454 [2021-11-07 23:04:50,373 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 23:04:50,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:04:50,378 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.31ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:50,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 55.31ms Time] [2021-11-07 23:04:50,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 23:04:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-07 23:04:50,388 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 23:04:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-07 23:04:50,389 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-07 23:04:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:50,389 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-07 23:04:50,389 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 23:04:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-07 23:04:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 23:04:50,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:50,391 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 23:04:50,418 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 23:04:50,615 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 23:04:50,616 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 23:04:50,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-07 23:04:50,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:50,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303597172] [2021-11-07 23:04:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:50,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:50,633 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:50,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753599324] [2021-11-07 23:04:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:50,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:50,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:50,634 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 23:04:50,640 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 23:04:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:50,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 23:04:50,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:51,070 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 23:04:51,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 23:04:51,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:51,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303597172] [2021-11-07 23:04:51,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:04:51,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753599324] [2021-11-07 23:04:51,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753599324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:04:51,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:04:51,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 23:04:51,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736618682] [2021-11-07 23:04:51,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:04:51,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 23:04:51,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 23:04:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:04:51,078 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 23:04:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:51,142 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-07 23:04:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 23:04:51,142 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 23:04:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:51,144 INFO L225 Difference]: With dead ends: 494 [2021-11-07 23:04:51,144 INFO L226 Difference]: Without dead ends: 259 [2021-11-07 23:04:51,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:04:51,146 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.19ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:51,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 55.19ms Time] [2021-11-07 23:04:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-07 23:04:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-07 23:04:51,157 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 23:04:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-07 23:04:51,158 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-07 23:04:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:51,159 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-07 23:04:51,160 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 23:04:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-07 23:04:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 23:04:51,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:51,168 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 23:04:51,195 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 23:04:51,383 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 23:04:51,384 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 23:04:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-07 23:04:51,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:51,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238893877] [2021-11-07 23:04:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:51,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:51,405 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:51,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103399450] [2021-11-07 23:04:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:51,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:51,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:51,407 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 23:04:51,431 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 23:04:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:51,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 23:04:51,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:51,815 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 23:04:51,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 23:04:51,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:51,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238893877] [2021-11-07 23:04:51,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:04:51,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103399450] [2021-11-07 23:04:51,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103399450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:04:51,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:04:51,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 23:04:51,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437269069] [2021-11-07 23:04:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:04:51,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 23:04:51,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 23:04:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 23:04:51,818 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 23:04:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:51,876 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-07 23:04:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 23:04:51,877 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 23:04:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:51,878 INFO L225 Difference]: With dead ends: 505 [2021-11-07 23:04:51,878 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 23:04:51,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 23:04:51,879 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 270 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.62ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:51,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 517 Invalid, 66 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 45.62ms Time] [2021-11-07 23:04:51,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 23:04:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-07 23:04:51,884 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 23:04:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-07 23:04:51,885 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-07 23:04:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:51,886 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-07 23:04:51,886 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 23:04:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-07 23:04:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 23:04:51,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:51,887 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 23:04:51,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 23:04:52,102 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 23:04:52,103 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 23:04:52,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-07 23:04:52,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:52,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628761008] [2021-11-07 23:04:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:52,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:52,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:52,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992351550] [2021-11-07 23:04:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:52,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:52,118 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 23:04:52,120 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 23:04:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:52,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 23:04:52,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:52,459 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 23:04:52,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 23:04:52,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:52,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628761008] [2021-11-07 23:04:52,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:04:52,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992351550] [2021-11-07 23:04:52,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992351550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:04:52,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:04:52,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 23:04:52,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441841950] [2021-11-07 23:04:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:04:52,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 23:04:52,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 23:04:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 23:04:52,462 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 23:04:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:52,530 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-07 23:04:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 23:04:52,531 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 23:04:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:52,532 INFO L225 Difference]: With dead ends: 566 [2021-11-07 23:04:52,532 INFO L226 Difference]: Without dead ends: 325 [2021-11-07 23:04:52,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 23:04:52,533 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 263 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.89ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:52,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 812 Invalid, 66 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 47.89ms Time] [2021-11-07 23:04:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-07 23:04:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-07 23:04:52,539 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 23:04:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-07 23:04:52,540 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-07 23:04:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:52,540 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-07 23:04:52,540 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 23:04:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-07 23:04:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 23:04:52,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:52,541 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 23:04:52,565 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 23:04:52,759 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 23:04:52,759 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 23:04:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-07 23:04:52,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:52,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281665771] [2021-11-07 23:04:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:52,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:52,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:52,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228991273] [2021-11-07 23:04:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:52,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:52,773 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 23:04:52,774 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 23:04:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:52,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 23:04:52,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:53,125 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 23:04:53,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 23:04:53,339 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 23:04:53,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:53,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281665771] [2021-11-07 23:04:53,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:04:53,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228991273] [2021-11-07 23:04:53,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228991273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 23:04:53,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 23:04:53,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 23:04:53,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913060574] [2021-11-07 23:04:53,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 23:04:53,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 23:04:53,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 23:04:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 23:04:53,341 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 23:04:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:53,386 INFO L93 Difference]: Finished difference Result 821 states and 1005 transitions. [2021-11-07 23:04:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 23:04:53,386 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 23:04:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:53,389 INFO L225 Difference]: With dead ends: 821 [2021-11-07 23:04:53,389 INFO L226 Difference]: Without dead ends: 776 [2021-11-07 23:04:53,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.65ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 23:04:53,390 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 948 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.27ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:53,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 1054 Invalid, 20 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 17.27ms Time] [2021-11-07 23:04:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-07 23:04:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-07 23:04:53,413 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 23:04:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 947 transitions. [2021-11-07 23:04:53,416 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 947 transitions. Word has length 106 [2021-11-07 23:04:53,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:53,416 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 947 transitions. [2021-11-07 23:04:53,416 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 23:04:53,417 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 947 transitions. [2021-11-07 23:04:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-07 23:04:53,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:53,422 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 23:04:53,450 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 23:04:53,647 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 23:04:53,648 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 23:04:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1181109906, now seen corresponding path program 2 times [2021-11-07 23:04:53,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:53,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734318883] [2021-11-07 23:04:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:53,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:53,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:53,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773654783] [2021-11-07 23:04:53,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 23:04:53,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:53,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:53,670 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 23:04:53,673 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 23:04:53,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 23:04:53,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 23:04:53,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 23:04:53,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:55,512 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 23:04:55,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 23:04:55,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:55,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734318883] [2021-11-07 23:04:55,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:04:55,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773654783] [2021-11-07 23:04:55,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773654783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:04:55,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:04:55,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 23:04:55,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489243822] [2021-11-07 23:04:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:04:55,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 23:04:55,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:55,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 23:04:55,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 23:04:55,516 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 23:04:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:55,771 INFO L93 Difference]: Finished difference Result 1405 states and 1719 transitions. [2021-11-07 23:04:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 23:04:55,772 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 23:04:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:55,774 INFO L225 Difference]: With dead ends: 1405 [2021-11-07 23:04:55,774 INFO L226 Difference]: Without dead ends: 774 [2021-11-07 23:04:55,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.78ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 23:04:55,776 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 75 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.34ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:55,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 726 Invalid, 68 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 238.34ms Time] [2021-11-07 23:04:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-07 23:04:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-11-07 23:04:55,789 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 23:04:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-07 23:04:55,791 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 400 [2021-11-07 23:04:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:55,791 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-07 23:04:55,791 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 23:04:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-07 23:04:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-07 23:04:55,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:55,797 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 23:04:55,822 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 23:04:56,019 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 23:04:56,020 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 23:04:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:56,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 1 times [2021-11-07 23:04:56,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:56,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832414365] [2021-11-07 23:04:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:56,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:56,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:56,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642695106] [2021-11-07 23:04:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:56,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:56,071 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 23:04:56,073 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 23:04:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 23:04:56,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 23:04:56,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:57,173 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 23:04:57,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 23:04:58,014 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 23:04:58,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:04:58,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832414365] [2021-11-07 23:04:58,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:04:58,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642695106] [2021-11-07 23:04:58,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642695106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 23:04:58,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 23:04:58,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 23:04:58,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487530246] [2021-11-07 23:04:58,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 23:04:58,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 23:04:58,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:04:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 23:04:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 23:04:58,018 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 23:04:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:04:58,142 INFO L93 Difference]: Finished difference Result 1911 states and 2337 transitions. [2021-11-07 23:04:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 23:04:58,143 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 23:04:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:04:58,149 INFO L225 Difference]: With dead ends: 1911 [2021-11-07 23:04:58,149 INFO L226 Difference]: Without dead ends: 1866 [2021-11-07 23:04:58,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.84ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 23:04:58,152 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 3587 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3587 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.95ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.03ms IncrementalHoareTripleChecker+Time [2021-11-07 23:04:58,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3587 Valid, 2296 Invalid, 43 Unknown, 0 Unchecked, 9.95ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 42.03ms Time] [2021-11-07 23:04:58,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-11-07 23:04:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1866. [2021-11-07 23:04:58,205 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 23:04:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2276 transitions. [2021-11-07 23:04:58,210 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2276 transitions. Word has length 407 [2021-11-07 23:04:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:04:58,210 INFO L470 AbstractCegarLoop]: Abstraction has 1866 states and 2276 transitions. [2021-11-07 23:04:58,211 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 23:04:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2276 transitions. [2021-11-07 23:04:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-11-07 23:04:58,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:04:58,239 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 23:04:58,267 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 23:04:58,459 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 23:04:58,460 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 23:04:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:04:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -267019748, now seen corresponding path program 2 times [2021-11-07 23:04:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:04:58,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984563622] [2021-11-07 23:04:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:04:58,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:04:58,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:04:58,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534185677] [2021-11-07 23:04:58,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 23:04:58,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:04:58,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:04:58,496 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 23:04:58,525 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 23:04:59,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 23:04:59,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 23:04:59,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 23:04:59,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:05:00,433 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 23:05:00,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 23:05:00,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 23:05:00,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984563622] [2021-11-07 23:05:00,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 23:05:00,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534185677] [2021-11-07 23:05:00,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534185677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 23:05:00,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 23:05:00,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 23:05:00,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756595573] [2021-11-07 23:05:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 23:05:00,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 23:05:00,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 23:05:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 23:05:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:05:00,437 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 23:05:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:05:00,492 INFO L93 Difference]: Finished difference Result 3674 states and 4486 transitions. [2021-11-07 23:05:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 23:05:00,494 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 23:05:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:05:00,500 INFO L225 Difference]: With dead ends: 3674 [2021-11-07 23:05:00,500 INFO L226 Difference]: Without dead ends: 1864 [2021-11-07 23:05:00,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 23:05:00,502 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 19 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.24ms IncrementalHoareTripleChecker+Time [2021-11-07 23:05:00,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 24.24ms Time] [2021-11-07 23:05:00,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-11-07 23:05:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1864. [2021-11-07 23:05:00,536 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 23:05:00,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2273 transitions. [2021-11-07 23:05:00,542 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2273 transitions. Word has length 995 [2021-11-07 23:05:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:05:00,542 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 2273 transitions. [2021-11-07 23:05:00,542 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 23:05:00,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2273 transitions. [2021-11-07 23:05:00,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2021-11-07 23:05:00,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:05:00,552 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 23:05:00,588 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 23:05:00,767 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 23:05:00,768 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 23:05:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:05:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 791199788, now seen corresponding path program 1 times [2021-11-07 23:05:00,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 23:05:00,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413891576] [2021-11-07 23:05:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:05:00,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 23:05:00,800 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 23:05:00,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837112757] [2021-11-07 23:05:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 23:05:00,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 23:05:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 23:05:00,802 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 23:05:00,803 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