./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 22:36:45,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 22:36:45,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 22:36:45,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 22:36:45,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 22:36:45,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 22:36:45,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 22:36:45,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 22:36:45,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 22:36:45,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 22:36:45,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 22:36:45,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 22:36:45,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 22:36:45,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 22:36:45,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 22:36:45,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 22:36:45,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 22:36:45,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 22:36:45,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 22:36:45,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 22:36:45,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 22:36:45,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 22:36:45,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 22:36:45,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 22:36:45,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 22:36:45,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 22:36:45,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 22:36:45,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 22:36:45,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 22:36:45,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 22:36:45,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 22:36:45,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 22:36:45,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 22:36:45,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 22:36:45,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 22:36:45,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 22:36:45,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 22:36:45,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 22:36:45,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 22:36:45,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 22:36:45,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 22:36:45,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 22:36:45,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 22:36:45,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 22:36:45,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 22:36:45,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 22:36:45,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 22:36:45,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 22:36:45,905 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 22:36:45,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 22:36:45,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 22:36:45,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 22:36:45,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 22:36:45,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 22:36:45,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 22:36:45,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 22:36:45,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 22:36:45,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 22:36:45,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 22:36:45,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 22:36:45,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 22:36:45,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 22:36:45,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 22:36:45,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 22:36:45,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:36:45,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 22:36:45,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 22:36:45,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 22:36:45,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 22:36:45,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 22:36:45,910 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 22:36:45,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 22:36:45,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 22:36:45,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 22:36:45,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2021-11-06 22:36:46,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 22:36:46,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 22:36:46,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 22:36:46,151 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 22:36:46,155 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 22:36:46,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-06 22:36:46,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc79640/34fb69691bb74b56b098c7f8e4843579/FLAG824c193a3 [2021-11-06 22:36:46,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 22:36:46,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-06 22:36:46,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc79640/34fb69691bb74b56b098c7f8e4843579/FLAG824c193a3 [2021-11-06 22:36:46,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc79640/34fb69691bb74b56b098c7f8e4843579 [2021-11-06 22:36:46,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 22:36:46,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 22:36:46,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 22:36:46,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 22:36:46,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 22:36:46,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:46" (1/1) ... [2021-11-06 22:36:46,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1ace5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:46, skipping insertion in model container [2021-11-06 22:36:46,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:46" (1/1) ... [2021-11-06 22:36:46,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 22:36:46,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 22:36:47,239 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_BER_test6-1.i[44118,44131] [2021-11-06 22:36:47,256 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_BER_test6-1.i[44660,44673] [2021-11-06 22:36:47,341 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_BER_test6-1.i[56247,56260] [2021-11-06 22:36:47,342 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_BER_test6-1.i[56368,56381] [2021-11-06 22:36:47,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:36:47,355 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 22:36:47,378 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_BER_test6-1.i[44118,44131] [2021-11-06 22:36:47,380 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_BER_test6-1.i[44660,44673] [2021-11-06 22:36:47,429 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_BER_test6-1.i[56247,56260] [2021-11-06 22:36:47,430 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_BER_test6-1.i[56368,56381] [2021-11-06 22:36:47,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:36:47,479 INFO L208 MainTranslator]: Completed translation [2021-11-06 22:36:47,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47 WrapperNode [2021-11-06 22:36:47,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 22:36:47,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 22:36:47,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 22:36:47,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 22:36:47,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 22:36:47,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 22:36:47,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 22:36:47,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 22:36:47,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 22:36:47,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 22:36:47,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 22:36:47,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 22:36:47,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (1/1) ... [2021-11-06 22:36:47,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:36:47,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:47,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 22:36:47,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 22:36:47,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 22:36:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 22:36:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 22:36:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 22:36:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 22:36:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 22:36:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 22:36:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 22:36:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 22:36:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 22:36:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 22:36:48,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 22:36:48,756 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-06 22:36:48,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:48 BoogieIcfgContainer [2021-11-06 22:36:48,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 22:36:48,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 22:36:48,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 22:36:48,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 22:36:48,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:46" (1/3) ... [2021-11-06 22:36:48,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5251a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:48, skipping insertion in model container [2021-11-06 22:36:48,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:47" (2/3) ... [2021-11-06 22:36:48,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5251a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:48, skipping insertion in model container [2021-11-06 22:36:48,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:48" (3/3) ... [2021-11-06 22:36:48,765 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2021-11-06 22:36:48,768 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 22:36:48,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-06 22:36:48,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 22:36:48,805 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 22:36:48,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-06 22:36:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:36:48,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:48,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:48,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-06 22:36:48,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:48,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067160754] [2021-11-06 22:36:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:48,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:49,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:49,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067160754] [2021-11-06 22:36:49,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067160754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:49,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:49,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 22:36:49,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895808174] [2021-11-06 22:36:49,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 22:36:49,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 22:36:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:36:49,072 INFO L87 Difference]: Start difference. First operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:49,124 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2021-11-06 22:36:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 22:36:49,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-06 22:36:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:49,138 INFO L225 Difference]: With dead ends: 466 [2021-11-06 22:36:49,138 INFO L226 Difference]: Without dead ends: 227 [2021-11-06 22:36:49,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:36:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-06 22:36:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-06 22:36:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 226 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2021-11-06 22:36:49,184 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2021-11-06 22:36:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:49,184 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2021-11-06 22:36:49,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2021-11-06 22:36:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 22:36:49,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:49,186 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:49,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 22:36:49,186 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-06 22:36:49,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:49,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127253778] [2021-11-06 22:36:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:49,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:49,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:49,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127253778] [2021-11-06 22:36:49,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127253778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:49,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:49,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:49,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133250089] [2021-11-06 22:36:49,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:49,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:49,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:49,288 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:49,659 INFO L93 Difference]: Finished difference Result 479 states and 601 transitions. [2021-11-06 22:36:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-06 22:36:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:49,662 INFO L225 Difference]: With dead ends: 479 [2021-11-06 22:36:49,662 INFO L226 Difference]: Without dead ends: 369 [2021-11-06 22:36:49,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-06 22:36:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 229. [2021-11-06 22:36:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.31651376146789) internal successors, (287), 228 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2021-11-06 22:36:49,693 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 10 [2021-11-06 22:36:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:49,693 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2021-11-06 22:36:49,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2021-11-06 22:36:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 22:36:49,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:49,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:49,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 22:36:49,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-06 22:36:49,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:49,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211157293] [2021-11-06 22:36:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:49,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:49,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:49,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121274568] [2021-11-06 22:36:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:49,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:49,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:49,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:49,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 22:36:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:49,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:49,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:50,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:50,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211157293] [2021-11-06 22:36:50,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:50,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121274568] [2021-11-06 22:36:50,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121274568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:50,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:50,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:50,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678044210] [2021-11-06 22:36:50,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:50,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:50,053 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:50,124 INFO L93 Difference]: Finished difference Result 475 states and 601 transitions. [2021-11-06 22:36:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-06 22:36:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:50,128 INFO L225 Difference]: With dead ends: 475 [2021-11-06 22:36:50,128 INFO L226 Difference]: Without dead ends: 250 [2021-11-06 22:36:50,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-06 22:36:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-11-06 22:36:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 248 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2021-11-06 22:36:50,157 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 44 [2021-11-06 22:36:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:50,157 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2021-11-06 22:36:50,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2021-11-06 22:36:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 22:36:50,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:50,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:50,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 22:36:50,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:50,376 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:50,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2021-11-06 22:36:50,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:50,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317665495] [2021-11-06 22:36:50,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:50,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:50,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:50,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663106742] [2021-11-06 22:36:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:50,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:50,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:50,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:50,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 22:36:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:50,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:50,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:50,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:50,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317665495] [2021-11-06 22:36:50,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:50,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663106742] [2021-11-06 22:36:50,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663106742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:50,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:50,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:50,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746678661] [2021-11-06 22:36:50,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:50,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:50,690 INFO L87 Difference]: Start difference. First operand 249 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:50,763 INFO L93 Difference]: Finished difference Result 487 states and 603 transitions. [2021-11-06 22:36:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:50,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-06 22:36:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:50,765 INFO L225 Difference]: With dead ends: 487 [2021-11-06 22:36:50,765 INFO L226 Difference]: Without dead ends: 242 [2021-11-06 22:36:50,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-06 22:36:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2021-11-06 22:36:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 224 states have (on average 1.2767857142857142) internal successors, (286), 234 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2021-11-06 22:36:50,785 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 44 [2021-11-06 22:36:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:50,786 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2021-11-06 22:36:50,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2021-11-06 22:36:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 22:36:50,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:50,789 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:50,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:51,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 22:36:51,004 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:51,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-06 22:36:51,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:51,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715696778] [2021-11-06 22:36:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:51,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:51,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:51,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100096373] [2021-11-06 22:36:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:51,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:51,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:51,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:51,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 22:36:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:51,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 22:36:51,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:51,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:51,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715696778] [2021-11-06 22:36:51,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:51,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100096373] [2021-11-06 22:36:51,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100096373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:51,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:51,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:51,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074041436] [2021-11-06 22:36:51,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:51,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:51,327 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:51,406 INFO L93 Difference]: Finished difference Result 446 states and 549 transitions. [2021-11-06 22:36:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:36:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-06 22:36:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:51,409 INFO L225 Difference]: With dead ends: 446 [2021-11-06 22:36:51,409 INFO L226 Difference]: Without dead ends: 444 [2021-11-06 22:36:51,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-06 22:36:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 233. [2021-11-06 22:36:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 223 states have (on average 1.2735426008968609) internal successors, (284), 232 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2021-11-06 22:36:51,430 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 44 [2021-11-06 22:36:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:51,430 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2021-11-06 22:36:51,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:51,431 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2021-11-06 22:36:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 22:36:51,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:51,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:51,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:51,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:51,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-06 22:36:51,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:51,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226330885] [2021-11-06 22:36:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:51,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:51,661 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:51,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256965530] [2021-11-06 22:36:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:51,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:51,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:51,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:51,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 22:36:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:51,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 22:36:51,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:51,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:51,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226330885] [2021-11-06 22:36:51,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:51,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256965530] [2021-11-06 22:36:51,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256965530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:51,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:51,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:51,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693114236] [2021-11-06 22:36:51,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:36:51,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:36:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:51,976 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:52,071 INFO L93 Difference]: Finished difference Result 940 states and 1155 transitions. [2021-11-06 22:36:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:36:52,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-11-06 22:36:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:52,079 INFO L225 Difference]: With dead ends: 940 [2021-11-06 22:36:52,079 INFO L226 Difference]: Without dead ends: 711 [2021-11-06 22:36:52,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-06 22:36:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 325. [2021-11-06 22:36:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 316 states have (on average 1.25) internal successors, (395), 324 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 395 transitions. [2021-11-06 22:36:52,091 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 395 transitions. Word has length 51 [2021-11-06 22:36:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:52,092 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 395 transitions. [2021-11-06 22:36:52,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 395 transitions. [2021-11-06 22:36:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 22:36:52,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:52,095 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:52,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 22:36:52,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:52,312 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:52,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2021-11-06 22:36:52,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:52,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241869939] [2021-11-06 22:36:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:52,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:52,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:52,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028898792] [2021-11-06 22:36:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:52,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:52,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:52,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:52,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 22:36:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:52,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:52,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:52,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:52,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241869939] [2021-11-06 22:36:52,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:52,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028898792] [2021-11-06 22:36:52,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028898792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:52,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:52,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:52,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024470994] [2021-11-06 22:36:52,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:52,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:52,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:52,803 INFO L87 Difference]: Start difference. First operand 325 states and 395 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:52,897 INFO L93 Difference]: Finished difference Result 686 states and 832 transitions. [2021-11-06 22:36:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-06 22:36:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:52,899 INFO L225 Difference]: With dead ends: 686 [2021-11-06 22:36:52,899 INFO L226 Difference]: Without dead ends: 365 [2021-11-06 22:36:52,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-06 22:36:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 336. [2021-11-06 22:36:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2560975609756098) internal successors, (412), 335 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2021-11-06 22:36:52,917 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 54 [2021-11-06 22:36:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:52,924 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2021-11-06 22:36:52,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2021-11-06 22:36:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 22:36:52,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:52,927 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:52,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-06 22:36:53,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:53,148 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash 901612414, now seen corresponding path program 1 times [2021-11-06 22:36:53,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:53,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531205826] [2021-11-06 22:36:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:53,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:53,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704266828] [2021-11-06 22:36:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:53,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:53,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:53,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 22:36:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:53,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:53,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:53,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:53,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531205826] [2021-11-06 22:36:53,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:53,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704266828] [2021-11-06 22:36:53,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704266828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:53,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:53,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:53,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571928466] [2021-11-06 22:36:53,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:53,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:53,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:53,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:53,566 INFO L87 Difference]: Start difference. First operand 336 states and 412 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:53,638 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2021-11-06 22:36:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:53,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-06 22:36:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:53,640 INFO L225 Difference]: With dead ends: 626 [2021-11-06 22:36:53,640 INFO L226 Difference]: Without dead ends: 342 [2021-11-06 22:36:53,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-06 22:36:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2021-11-06 22:36:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2530487804878048) internal successors, (411), 335 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 411 transitions. [2021-11-06 22:36:53,649 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 411 transitions. Word has length 78 [2021-11-06 22:36:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:53,649 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 411 transitions. [2021-11-06 22:36:53,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 411 transitions. [2021-11-06 22:36:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 22:36:53,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:53,650 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:53,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:53,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:53,863 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash -611683268, now seen corresponding path program 1 times [2021-11-06 22:36:53,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:53,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999983893] [2021-11-06 22:36:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:53,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:53,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256494641] [2021-11-06 22:36:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:53,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:53,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:53,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 22:36:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:54,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:54,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:54,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 22:36:54,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 22:36:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 22:36:54,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:54,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999983893] [2021-11-06 22:36:54,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:54,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256494641] [2021-11-06 22:36:54,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256494641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:54,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:54,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:54,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168376121] [2021-11-06 22:36:54,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:54,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:54,327 INFO L87 Difference]: Start difference. First operand 336 states and 411 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:54,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:54,558 INFO L93 Difference]: Finished difference Result 447 states and 551 transitions. [2021-11-06 22:36:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:54,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 79 [2021-11-06 22:36:54,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:54,561 INFO L225 Difference]: With dead ends: 447 [2021-11-06 22:36:54,561 INFO L226 Difference]: Without dead ends: 431 [2021-11-06 22:36:54,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-06 22:36:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 338. [2021-11-06 22:36:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 330 states have (on average 1.2515151515151515) internal successors, (413), 337 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 413 transitions. [2021-11-06 22:36:54,571 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 413 transitions. Word has length 79 [2021-11-06 22:36:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:54,571 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 413 transitions. [2021-11-06 22:36:54,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 413 transitions. [2021-11-06 22:36:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 22:36:54,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:54,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:54,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:54,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:54,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1201768388, now seen corresponding path program 1 times [2021-11-06 22:36:54,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:54,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589658135] [2021-11-06 22:36:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:54,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:54,814 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:54,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194096645] [2021-11-06 22:36:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:54,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:54,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:54,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:54,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 22:36:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:55,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-06 22:36:55,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:55,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589658135] [2021-11-06 22:36:55,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194096645] [2021-11-06 22:36:55,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194096645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:55,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:55,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 22:36:55,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940639773] [2021-11-06 22:36:55,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:36:55,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:55,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:36:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:55,372 INFO L87 Difference]: Start difference. First operand 338 states and 413 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:55,434 INFO L93 Difference]: Finished difference Result 625 states and 771 transitions. [2021-11-06 22:36:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 22:36:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 81 [2021-11-06 22:36:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:55,436 INFO L225 Difference]: With dead ends: 625 [2021-11-06 22:36:55,437 INFO L226 Difference]: Without dead ends: 339 [2021-11-06 22:36:55,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 22:36:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-06 22:36:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-06 22:36:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.2507552870090635) internal successors, (414), 338 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 414 transitions. [2021-11-06 22:36:55,447 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 414 transitions. Word has length 81 [2021-11-06 22:36:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:55,448 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 414 transitions. [2021-11-06 22:36:55,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 414 transitions. [2021-11-06 22:36:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 22:36:55,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:55,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:55,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:55,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 22:36:55,669 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:55,670 INFO L85 PathProgramCache]: Analyzing trace with hash -169971840, now seen corresponding path program 1 times [2021-11-06 22:36:55,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:55,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023507922] [2021-11-06 22:36:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:55,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:55,683 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:55,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558154471] [2021-11-06 22:36:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:55,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:55,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:55,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 22:36:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-06 22:36:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:56,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:56,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023507922] [2021-11-06 22:36:56,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:56,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558154471] [2021-11-06 22:36:56,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558154471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:56,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:56,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-06 22:36:56,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125940909] [2021-11-06 22:36:56,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 22:36:56,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 22:36:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:36:56,251 INFO L87 Difference]: Start difference. First operand 339 states and 414 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:56,661 INFO L93 Difference]: Finished difference Result 627 states and 773 transitions. [2021-11-06 22:36:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 22:36:56,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 82 [2021-11-06 22:36:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:56,665 INFO L225 Difference]: With dead ends: 627 [2021-11-06 22:36:56,665 INFO L226 Difference]: Without dead ends: 340 [2021-11-06 22:36:56,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-06 22:36:56,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-06 22:36:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-06 22:36:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 332 states have (on average 1.25) internal successors, (415), 339 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 415 transitions. [2021-11-06 22:36:56,686 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 415 transitions. Word has length 82 [2021-11-06 22:36:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:56,687 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 415 transitions. [2021-11-06 22:36:56,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 415 transitions. [2021-11-06 22:36:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 22:36:56,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:56,688 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:56,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:56,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:56,903 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash 255754052, now seen corresponding path program 2 times [2021-11-06 22:36:56,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:56,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723801302] [2021-11-06 22:36:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:56,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:56,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:56,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69747260] [2021-11-06 22:36:56,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:36:56,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:56,917 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:56,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 22:36:57,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 22:36:57,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:57,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 22:36:57,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 22:36:57,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:57,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723801302] [2021-11-06 22:36:57,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:57,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69747260] [2021-11-06 22:36:57,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69747260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:57,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:57,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:57,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213021527] [2021-11-06 22:36:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:57,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:57,487 INFO L87 Difference]: Start difference. First operand 340 states and 415 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:57,515 INFO L93 Difference]: Finished difference Result 629 states and 775 transitions. [2021-11-06 22:36:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:57,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 83 [2021-11-06 22:36:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:57,517 INFO L225 Difference]: With dead ends: 629 [2021-11-06 22:36:57,518 INFO L226 Difference]: Without dead ends: 341 [2021-11-06 22:36:57,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-06 22:36:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-11-06 22:36:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 333 states have (on average 1.2492492492492493) internal successors, (416), 340 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 416 transitions. [2021-11-06 22:36:57,530 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 416 transitions. Word has length 83 [2021-11-06 22:36:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:57,530 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 416 transitions. [2021-11-06 22:36:57,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 416 transitions. [2021-11-06 22:36:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 22:36:57,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:57,531 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:57,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:57,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 22:36:57,731 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-06 22:36:57,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:57,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510338133] [2021-11-06 22:36:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:57,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:57,745 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:57,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777479690] [2021-11-06 22:36:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:57,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:57,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:57,746 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:57,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 22:36:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-06 22:36:58,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 22:36:58,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:58,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510338133] [2021-11-06 22:36:58,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:58,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777479690] [2021-11-06 22:36:58,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777479690] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:58,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:58,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-06 22:36:58,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627384880] [2021-11-06 22:36:58,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 22:36:58,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 22:36:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 22:36:58,594 INFO L87 Difference]: Start difference. First operand 341 states and 416 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:59,051 INFO L93 Difference]: Finished difference Result 631 states and 777 transitions. [2021-11-06 22:36:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 22:36:59,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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 84 [2021-11-06 22:36:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:59,053 INFO L225 Difference]: With dead ends: 631 [2021-11-06 22:36:59,053 INFO L226 Difference]: Without dead ends: 342 [2021-11-06 22:36:59,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-06 22:36:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-06 22:36:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-11-06 22:36:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 334 states have (on average 1.248502994011976) internal successors, (417), 341 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 417 transitions. [2021-11-06 22:36:59,064 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 417 transitions. Word has length 84 [2021-11-06 22:36:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:59,064 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 417 transitions. [2021-11-06 22:36:59,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 417 transitions. [2021-11-06 22:36:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 22:36:59,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:59,066 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:59,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:59,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 22:36:59,276 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 22:36:59,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -501483645, now seen corresponding path program 2 times [2021-11-06 22:36:59,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:59,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329932525] [2021-11-06 22:36:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:59,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:59,293 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:59,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445543424] [2021-11-06 22:36:59,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:36:59,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:59,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:59,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:59,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15