./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:35:32,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:35:32,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:35:32,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:35:32,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:35:32,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:35:32,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:35:32,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:35:32,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:35:32,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:35:32,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:35:32,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:35:32,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:35:32,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:35:32,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:35:32,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:35:32,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:35:32,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:35:32,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:35:32,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:35:32,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:35:32,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:35:32,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:35:32,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:35:32,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:35:32,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:35:32,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:35:32,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:35:32,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:35:32,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:35:32,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:35:32,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:35:32,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:35:32,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:35:32,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:35:32,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:35:32,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:35:32,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:35:32,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:35:32,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:35:32,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:35:32,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:35:32,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:35:32,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:35:32,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:35:32,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:35:32,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:35:32,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:35:32,861 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:35:32,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:35:32,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:35:32,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:35:32,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:35:32,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:35:32,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:35:32,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:35:32,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:35:32,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:35:32,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:35:32,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:35:32,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:35:32,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:35:32,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:35:32,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:35:32,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:35:32,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:35:32,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:35:32,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:35:32,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:35:32,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:35:32,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:35:32,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 [2021-11-06 18:35:33,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:35:33,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:35:33,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:35:33,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:35:33,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:35:33,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-06 18:35:33,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39468ff94/3dfad08916584e5e9bfc2a431cd7ba00/FLAG10bcfddeb [2021-11-06 18:35:33,729 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:35:33,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-06 18:35:33,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39468ff94/3dfad08916584e5e9bfc2a431cd7ba00/FLAG10bcfddeb [2021-11-06 18:35:34,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39468ff94/3dfad08916584e5e9bfc2a431cd7ba00 [2021-11-06 18:35:34,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:35:34,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:35:34,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:35:34,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:35:34,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:35:34,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:35:34" (1/1) ... [2021-11-06 18:35:34,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1696f8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:34, skipping insertion in model container [2021-11-06 18:35:34,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:35:34" (1/1) ... [2021-11-06 18:35:34,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:35:34,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:35:35,580 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-06 18:35:35,583 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-06 18:35:35,583 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-06 18:35:35,583 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-06 18:35:35,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:35:35,634 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:35:35,828 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-06 18:35:35,829 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-06 18:35:35,829 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-06 18:35:35,830 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-06 18:35:35,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:35:35,928 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:35:35,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35 WrapperNode [2021-11-06 18:35:35,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:35:35,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:35:35,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:35:35,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:35:35,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:35:36,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:35:36,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:35:36,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:35:36,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:35:36,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:35:36,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:35:36,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:35:36,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (1/1) ... [2021-11-06 18:35:36,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:35:36,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:35:36,942 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 18:35:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:35:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:35:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:35:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:35:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-06 18:35:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:35:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:35:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:35:36,963 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 18:35:46,661 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:35:46,661 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:35:46,661 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:35:46,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:35:46,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:35:46,663 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:35:46,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:35:46,694 INFO L299 CfgBuilder]: Removed 4958 assume(true) statements. [2021-11-06 18:35:46,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:35:46 BoogieIcfgContainer [2021-11-06 18:35:46,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:35:46,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:35:46,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:35:46,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:35:46,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:35:34" (1/3) ... [2021-11-06 18:35:46,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63648307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:35:46, skipping insertion in model container [2021-11-06 18:35:46,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:35:35" (2/3) ... [2021-11-06 18:35:46,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63648307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:35:46, skipping insertion in model container [2021-11-06 18:35:46,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:35:46" (3/3) ... [2021-11-06 18:35:46,708 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-06 18:35:46,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:35:46,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-11-06 18:35:46,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:35:46,768 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 18:35:46,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2021-11-06 18:35:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 4079 states, 4055 states have (on average 1.3023427866831072) internal successors, (5281), 4078 states have internal predecessors, (5281), 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 18:35:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 18:35:46,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:46,835 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] [2021-11-06 18:35:46,835 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1375132322, now seen corresponding path program 1 times [2021-11-06 18:35:46,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:46,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632064390] [2021-11-06 18:35:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:46,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:47,202 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 18:35:47,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:47,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632064390] [2021-11-06 18:35:47,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632064390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:47,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:47,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:35:47,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518342216] [2021-11-06 18:35:47,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:35:47,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:35:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:35:47,230 INFO L87 Difference]: Start difference. First operand has 4079 states, 4055 states have (on average 1.3023427866831072) internal successors, (5281), 4078 states have internal predecessors, (5281), 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 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 18:35:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:47,842 INFO L93 Difference]: Finished difference Result 11185 states and 14484 transitions. [2021-11-06 18:35:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:35:47,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-06 18:35:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:47,878 INFO L225 Difference]: With dead ends: 11185 [2021-11-06 18:35:47,879 INFO L226 Difference]: Without dead ends: 6960 [2021-11-06 18:35:47,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:35:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2021-11-06 18:35:48,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6615. [2021-11-06 18:35:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6591 states have (on average 1.252465483234714) internal successors, (8255), 6614 states have internal predecessors, (8255), 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 18:35:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 8255 transitions. [2021-11-06 18:35:48,171 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 8255 transitions. Word has length 41 [2021-11-06 18:35:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:48,171 INFO L470 AbstractCegarLoop]: Abstraction has 6615 states and 8255 transitions. [2021-11-06 18:35:48,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 18:35:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 8255 transitions. [2021-11-06 18:35:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 18:35:48,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:48,176 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] [2021-11-06 18:35:48,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:35:48,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:48,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1114883933, now seen corresponding path program 1 times [2021-11-06 18:35:48,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:48,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057176075] [2021-11-06 18:35:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:48,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:48,323 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 18:35:48,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:48,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057176075] [2021-11-06 18:35:48,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057176075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:48,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:48,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:35:48,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538681126] [2021-11-06 18:35:48,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:35:48,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:35:48,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:35:48,326 INFO L87 Difference]: Start difference. First operand 6615 states and 8255 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:35:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:48,811 INFO L93 Difference]: Finished difference Result 19575 states and 24476 transitions. [2021-11-06 18:35:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:35:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-06 18:35:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:48,849 INFO L225 Difference]: With dead ends: 19575 [2021-11-06 18:35:48,849 INFO L226 Difference]: Without dead ends: 13028 [2021-11-06 18:35:48,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:35:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13028 states. [2021-11-06 18:35:49,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13028 to 13004. [2021-11-06 18:35:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13004 states, 12980 states have (on average 1.2535439137134052) internal successors, (16271), 13003 states have internal predecessors, (16271), 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 18:35:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 16271 transitions. [2021-11-06 18:35:49,136 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 16271 transitions. Word has length 42 [2021-11-06 18:35:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:49,137 INFO L470 AbstractCegarLoop]: Abstraction has 13004 states and 16271 transitions. [2021-11-06 18:35:49,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:35:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 16271 transitions. [2021-11-06 18:35:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 18:35:49,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:49,141 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] [2021-11-06 18:35:49,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:35:49,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:49,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1793047480, now seen corresponding path program 1 times [2021-11-06 18:35:49,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:49,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227035120] [2021-11-06 18:35:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:49,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:49,269 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 18:35:49,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:49,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227035120] [2021-11-06 18:35:49,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227035120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:49,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:49,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:35:49,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345477280] [2021-11-06 18:35:49,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:35:49,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:35:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:35:49,272 INFO L87 Difference]: Start difference. First operand 13004 states and 16271 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 18:35:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:50,151 INFO L93 Difference]: Finished difference Result 22789 states and 28625 transitions. [2021-11-06 18:35:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:35:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-06 18:35:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:50,190 INFO L225 Difference]: With dead ends: 22789 [2021-11-06 18:35:50,190 INFO L226 Difference]: Without dead ends: 9853 [2021-11-06 18:35:50,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:35:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9853 states. [2021-11-06 18:35:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9853 to 9799. [2021-11-06 18:35:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9799 states, 9775 states have (on average 1.2620971867007673) internal successors, (12337), 9798 states have internal predecessors, (12337), 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 18:35:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9799 states to 9799 states and 12337 transitions. [2021-11-06 18:35:50,376 INFO L78 Accepts]: Start accepts. Automaton has 9799 states and 12337 transitions. Word has length 48 [2021-11-06 18:35:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:50,376 INFO L470 AbstractCegarLoop]: Abstraction has 9799 states and 12337 transitions. [2021-11-06 18:35:50,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 18:35:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 9799 states and 12337 transitions. [2021-11-06 18:35:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 18:35:50,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:50,379 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-06 18:35:50,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:35:50,379 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash -83071518, now seen corresponding path program 1 times [2021-11-06 18:35:50,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:50,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434193671] [2021-11-06 18:35:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:50,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:35:50,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:50,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434193671] [2021-11-06 18:35:50,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434193671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:50,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:50,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:35:50,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680841415] [2021-11-06 18:35:50,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:35:50,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:35:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:35:50,484 INFO L87 Difference]: Start difference. First operand 9799 states and 12337 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:35:51,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:51,132 INFO L93 Difference]: Finished difference Result 27459 states and 34586 transitions. [2021-11-06 18:35:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:35:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 18:35:51,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:51,167 INFO L225 Difference]: With dead ends: 27459 [2021-11-06 18:35:51,168 INFO L226 Difference]: Without dead ends: 18527 [2021-11-06 18:35:51,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:35:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2021-11-06 18:35:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 18503. [2021-11-06 18:35:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18503 states, 18479 states have (on average 1.2619189350073057) internal successors, (23319), 18502 states have internal predecessors, (23319), 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 18:35:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18503 states to 18503 states and 23319 transitions. [2021-11-06 18:35:51,586 INFO L78 Accepts]: Start accepts. Automaton has 18503 states and 23319 transitions. Word has length 71 [2021-11-06 18:35:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:51,587 INFO L470 AbstractCegarLoop]: Abstraction has 18503 states and 23319 transitions. [2021-11-06 18:35:51,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:35:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 18503 states and 23319 transitions. [2021-11-06 18:35:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 18:35:51,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:51,590 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-06 18:35:51,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:35:51,591 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1362935196, now seen corresponding path program 1 times [2021-11-06 18:35:51,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:51,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779387874] [2021-11-06 18:35:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:51,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:35:51,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:51,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779387874] [2021-11-06 18:35:51,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779387874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:51,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:51,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:35:51,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381785798] [2021-11-06 18:35:51,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:35:51,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:51,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:35:51,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:35:51,696 INFO L87 Difference]: Start difference. First operand 18503 states and 23319 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:35:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:52,738 INFO L93 Difference]: Finished difference Result 44871 states and 56558 transitions. [2021-11-06 18:35:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:35:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 18:35:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:52,798 INFO L225 Difference]: With dead ends: 44871 [2021-11-06 18:35:52,798 INFO L226 Difference]: Without dead ends: 27235 [2021-11-06 18:35:52,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:35:52,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27235 states. [2021-11-06 18:35:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27235 to 27190. [2021-11-06 18:35:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27190 states, 27166 states have (on average 1.262018699845395) internal successors, (34284), 27189 states have internal predecessors, (34284), 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 18:35:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27190 states to 27190 states and 34284 transitions. [2021-11-06 18:35:53,494 INFO L78 Accepts]: Start accepts. Automaton has 27190 states and 34284 transitions. Word has length 71 [2021-11-06 18:35:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:53,495 INFO L470 AbstractCegarLoop]: Abstraction has 27190 states and 34284 transitions. [2021-11-06 18:35:53,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:35:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 27190 states and 34284 transitions. [2021-11-06 18:35:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 18:35:53,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:53,500 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 18:35:53,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:35:53,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2047198752, now seen corresponding path program 1 times [2021-11-06 18:35:53,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:53,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75366249] [2021-11-06 18:35:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:53,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:35:53,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:53,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75366249] [2021-11-06 18:35:53,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75366249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:53,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:53,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:35:53,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047243647] [2021-11-06 18:35:53,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:35:53,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:35:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:35:53,655 INFO L87 Difference]: Start difference. First operand 27190 states and 34284 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 18:35:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:54,127 INFO L93 Difference]: Finished difference Result 27190 states and 34284 transitions. [2021-11-06 18:35:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:35:54,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 72 [2021-11-06 18:35:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:54,176 INFO L225 Difference]: With dead ends: 27190 [2021-11-06 18:35:54,177 INFO L226 Difference]: Without dead ends: 27184 [2021-11-06 18:35:54,184 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 18:35:54,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27184 states. [2021-11-06 18:35:54,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27184 to 27184. [2021-11-06 18:35:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27184 states, 27163 states have (on average 1.2619371939771011) internal successors, (34278), 27183 states have internal predecessors, (34278), 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 18:35:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27184 states to 27184 states and 34278 transitions. [2021-11-06 18:35:54,628 INFO L78 Accepts]: Start accepts. Automaton has 27184 states and 34278 transitions. Word has length 72 [2021-11-06 18:35:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:54,628 INFO L470 AbstractCegarLoop]: Abstraction has 27184 states and 34278 transitions. [2021-11-06 18:35:54,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 18:35:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 27184 states and 34278 transitions. [2021-11-06 18:35:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 18:35:54,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:54,630 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 18:35:54,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:35:54,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:54,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:54,631 INFO L85 PathProgramCache]: Analyzing trace with hash -262838269, now seen corresponding path program 1 times [2021-11-06 18:35:54,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:54,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627098309] [2021-11-06 18:35:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:54,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:35:54,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:54,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627098309] [2021-11-06 18:35:54,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627098309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:54,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:54,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:35:54,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765871569] [2021-11-06 18:35:54,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:35:54,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:54,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:35:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:35:54,759 INFO L87 Difference]: Start difference. First operand 27184 states and 34278 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 18:35:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:55,067 INFO L93 Difference]: Finished difference Result 27184 states and 34278 transitions. [2021-11-06 18:35:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:35:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 74 [2021-11-06 18:35:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:55,125 INFO L225 Difference]: With dead ends: 27184 [2021-11-06 18:35:55,125 INFO L226 Difference]: Without dead ends: 27178 [2021-11-06 18:35:55,137 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 18:35:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27178 states. [2021-11-06 18:35:55,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27178 to 27178. [2021-11-06 18:35:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27178 states, 27160 states have (on average 1.2618556701030927) internal successors, (34272), 27177 states have internal predecessors, (34272), 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 18:35:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27178 states to 27178 states and 34272 transitions. [2021-11-06 18:35:55,715 INFO L78 Accepts]: Start accepts. Automaton has 27178 states and 34272 transitions. Word has length 74 [2021-11-06 18:35:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:55,715 INFO L470 AbstractCegarLoop]: Abstraction has 27178 states and 34272 transitions. [2021-11-06 18:35:55,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 18:35:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 27178 states and 34272 transitions. [2021-11-06 18:35:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 18:35:55,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:55,718 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 18:35:55,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:35:55,718 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash 815635110, now seen corresponding path program 1 times [2021-11-06 18:35:55,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:55,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244028189] [2021-11-06 18:35:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:55,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:35:55,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:55,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244028189] [2021-11-06 18:35:55,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244028189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:55,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:55,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:35:55,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671584131] [2021-11-06 18:35:55,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:35:55,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:55,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:35:55,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:35:55,845 INFO L87 Difference]: Start difference. First operand 27178 states and 34272 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 18:35:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:56,315 INFO L93 Difference]: Finished difference Result 27178 states and 34272 transitions. [2021-11-06 18:35:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:35:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 76 [2021-11-06 18:35:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:56,357 INFO L225 Difference]: With dead ends: 27178 [2021-11-06 18:35:56,357 INFO L226 Difference]: Without dead ends: 27172 [2021-11-06 18:35:56,365 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 18:35:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27172 states. [2021-11-06 18:35:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27172 to 27172. [2021-11-06 18:35:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27172 states, 27157 states have (on average 1.2617741282174024) internal successors, (34266), 27171 states have internal predecessors, (34266), 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 18:35:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27172 states to 27172 states and 34266 transitions. [2021-11-06 18:35:56,839 INFO L78 Accepts]: Start accepts. Automaton has 27172 states and 34266 transitions. Word has length 76 [2021-11-06 18:35:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:56,839 INFO L470 AbstractCegarLoop]: Abstraction has 27172 states and 34266 transitions. [2021-11-06 18:35:56,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 18:35:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 27172 states and 34266 transitions. [2021-11-06 18:35:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 18:35:56,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:56,849 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:35:56,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:35:56,851 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:56,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2141434313, now seen corresponding path program 1 times [2021-11-06 18:35:56,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:56,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550542480] [2021-11-06 18:35:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:56,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:35:56,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:56,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550542480] [2021-11-06 18:35:56,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550542480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:56,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:56,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:35:56,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950492086] [2021-11-06 18:35:56,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:35:56,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:35:56,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:35:56,978 INFO L87 Difference]: Start difference. First operand 27172 states and 34266 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:35:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:57,487 INFO L93 Difference]: Finished difference Result 27172 states and 34266 transitions. [2021-11-06 18:35:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:35:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 18:35:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:57,538 INFO L225 Difference]: With dead ends: 27172 [2021-11-06 18:35:57,538 INFO L226 Difference]: Without dead ends: 26327 [2021-11-06 18:35:57,550 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 18:35:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26327 states. [2021-11-06 18:35:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26327 to 26327. [2021-11-06 18:35:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26327 states, 26315 states have (on average 1.2608018240547216) internal successors, (33178), 26326 states have internal predecessors, (33178), 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 18:35:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26327 states to 26327 states and 33178 transitions. [2021-11-06 18:35:58,193 INFO L78 Accepts]: Start accepts. Automaton has 26327 states and 33178 transitions. Word has length 78 [2021-11-06 18:35:58,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:35:58,193 INFO L470 AbstractCegarLoop]: Abstraction has 26327 states and 33178 transitions. [2021-11-06 18:35:58,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:35:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 26327 states and 33178 transitions. [2021-11-06 18:35:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 18:35:58,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:35:58,197 INFO L513 BasicCegarLoop]: trace histogram [2, 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 18:35:58,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:35:58,197 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:35:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:35:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash 124598911, now seen corresponding path program 1 times [2021-11-06 18:35:58,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:35:58,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447668603] [2021-11-06 18:35:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:35:58,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:35:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:35:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:35:58,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:35:58,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447668603] [2021-11-06 18:35:58,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447668603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:35:58,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:35:58,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:35:58,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626210539] [2021-11-06 18:35:58,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:35:58,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:35:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:35:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:35:58,272 INFO L87 Difference]: Start difference. First operand 26327 states and 33178 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 18:35:59,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:35:59,433 INFO L93 Difference]: Finished difference Result 58816 states and 74329 transitions. [2021-11-06 18:35:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:35:59,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-06 18:35:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:35:59,493 INFO L225 Difference]: With dead ends: 58816 [2021-11-06 18:35:59,493 INFO L226 Difference]: Without dead ends: 33356 [2021-11-06 18:35:59,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:35:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33356 states. [2021-11-06 18:36:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33356 to 33332. [2021-11-06 18:36:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33332 states, 33320 states have (on average 1.2649459783913566) internal successors, (42148), 33331 states have internal predecessors, (42148), 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 18:36:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33332 states to 33332 states and 42148 transitions. [2021-11-06 18:36:00,270 INFO L78 Accepts]: Start accepts. Automaton has 33332 states and 42148 transitions. Word has length 80 [2021-11-06 18:36:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:36:00,270 INFO L470 AbstractCegarLoop]: Abstraction has 33332 states and 42148 transitions. [2021-11-06 18:36:00,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 18:36:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 33332 states and 42148 transitions. [2021-11-06 18:36:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 18:36:00,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:36:00,278 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:36:00,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:36:00,279 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:36:00,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:36:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash 512191264, now seen corresponding path program 1 times [2021-11-06 18:36:00,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:36:00,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685334702] [2021-11-06 18:36:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:36:00,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:36:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:36:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:36:00,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:36:00,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685334702] [2021-11-06 18:36:00,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685334702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:36:00,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:36:00,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:36:00,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364873004] [2021-11-06 18:36:00,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:36:00,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:36:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:36:00,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:36:00,353 INFO L87 Difference]: Start difference. First operand 33332 states and 42148 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 18:36:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:36:01,322 INFO L93 Difference]: Finished difference Result 72802 states and 92221 transitions. [2021-11-06 18:36:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:36:01,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 117 [2021-11-06 18:36:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:36:01,379 INFO L225 Difference]: With dead ends: 72802 [2021-11-06 18:36:01,379 INFO L226 Difference]: Without dead ends: 39551 [2021-11-06 18:36:01,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:36:01,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39551 states. [2021-11-06 18:36:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39551 to 39527. [2021-11-06 18:36:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39527 states, 39515 states have (on average 1.2672909021890422) internal successors, (50077), 39526 states have internal predecessors, (50077), 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 18:36:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39527 states to 39527 states and 50077 transitions. [2021-11-06 18:36:02,405 INFO L78 Accepts]: Start accepts. Automaton has 39527 states and 50077 transitions. Word has length 117 [2021-11-06 18:36:02,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:36:02,406 INFO L470 AbstractCegarLoop]: Abstraction has 39527 states and 50077 transitions. [2021-11-06 18:36:02,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 18:36:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 39527 states and 50077 transitions. [2021-11-06 18:36:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 18:36:02,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:36:02,414 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:36:02,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 18:36:02,415 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:36:02,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:36:02,415 INFO L85 PathProgramCache]: Analyzing trace with hash 934893090, now seen corresponding path program 1 times [2021-11-06 18:36:02,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:36:02,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596895353] [2021-11-06 18:36:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:36:02,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:36:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:36:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:36:02,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:36:02,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596895353] [2021-11-06 18:36:02,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596895353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:36:02,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:36:02,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:36:02,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788873002] [2021-11-06 18:36:02,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:36:02,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:36:02,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:36:02,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:36:02,494 INFO L87 Difference]: Start difference. First operand 39527 states and 50077 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 18:36:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:36:04,102 INFO L93 Difference]: Finished difference Result 85210 states and 108115 transitions. [2021-11-06 18:36:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:36:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 117 [2021-11-06 18:36:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:36:04,167 INFO L225 Difference]: With dead ends: 85210 [2021-11-06 18:36:04,167 INFO L226 Difference]: Without dead ends: 46550 [2021-11-06 18:36:04,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:36:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46550 states. [2021-11-06 18:36:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46550 to 46526. [2021-11-06 18:36:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46526 states, 46514 states have (on average 1.269316764844993) internal successors, (59041), 46525 states have internal predecessors, (59041), 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 18:36:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46526 states to 46526 states and 59041 transitions. [2021-11-06 18:36:05,405 INFO L78 Accepts]: Start accepts. Automaton has 46526 states and 59041 transitions. Word has length 117 [2021-11-06 18:36:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:36:05,406 INFO L470 AbstractCegarLoop]: Abstraction has 46526 states and 59041 transitions. [2021-11-06 18:36:05,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 18:36:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 46526 states and 59041 transitions. [2021-11-06 18:36:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 18:36:05,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:36:05,418 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:36:05,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 18:36:05,419 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:36:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:36:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1208625008, now seen corresponding path program 1 times [2021-11-06 18:36:05,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:36:05,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630933268] [2021-11-06 18:36:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:36:05,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:36:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:36:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:36:05,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:36:05,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630933268] [2021-11-06 18:36:05,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630933268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:36:05,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:36:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:36:05,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213230711] [2021-11-06 18:36:05,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:36:05,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:36:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:36:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:36:05,498 INFO L87 Difference]: Start difference. First operand 46526 states and 59041 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 18:36:06,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:36:06,957 INFO L93 Difference]: Finished difference Result 99196 states and 126019 transitions. [2021-11-06 18:36:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:36:06,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 152 [2021-11-06 18:36:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:36:07,041 INFO L225 Difference]: With dead ends: 99196 [2021-11-06 18:36:07,041 INFO L226 Difference]: Without dead ends: 53537 [2021-11-06 18:36:07,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:36:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53537 states. [2021-11-06 18:36:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53537 to 53513. [2021-11-06 18:36:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53513 states, 53501 states have (on average 1.2708734416179137) internal successors, (67993), 53512 states have internal predecessors, (67993), 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 18:36:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53513 states to 53513 states and 67993 transitions. [2021-11-06 18:36:08,423 INFO L78 Accepts]: Start accepts. Automaton has 53513 states and 67993 transitions. Word has length 152 [2021-11-06 18:36:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:36:08,423 INFO L470 AbstractCegarLoop]: Abstraction has 53513 states and 67993 transitions. [2021-11-06 18:36:08,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 18:36:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 53513 states and 67993 transitions. [2021-11-06 18:36:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 18:36:08,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:36:08,436 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:36:08,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 18:36:08,437 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:36:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:36:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash -785923182, now seen corresponding path program 1 times [2021-11-06 18:36:08,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:36:08,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991339901] [2021-11-06 18:36:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:36:08,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:36:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:36:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:36:08,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:36:08,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991339901] [2021-11-06 18:36:08,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991339901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:36:08,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:36:08,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:36:08,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629379217] [2021-11-06 18:36:08,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:36:08,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:36:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:36:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:36:08,518 INFO L87 Difference]: Start difference. First operand 53513 states and 67993 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 18:36:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:36:10,309 INFO L93 Difference]: Finished difference Result 113176 states and 143935 transitions. [2021-11-06 18:36:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:36:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 152 [2021-11-06 18:36:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:36:10,400 INFO L225 Difference]: With dead ends: 113176 [2021-11-06 18:36:10,400 INFO L226 Difference]: Without dead ends: 60530 [2021-11-06 18:36:10,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 18:36:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60530 states. [2021-11-06 18:36:11,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60530 to 60506. [2021-11-06 18:36:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60506 states, 60494 states have (on average 1.2720435084471187) internal successors, (76951), 60505 states have internal predecessors, (76951), 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 18:36:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60506 states to 60506 states and 76951 transitions. [2021-11-06 18:36:11,678 INFO L78 Accepts]: Start accepts. Automaton has 60506 states and 76951 transitions. Word has length 152 [2021-11-06 18:36:11,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:36:11,678 INFO L470 AbstractCegarLoop]: Abstraction has 60506 states and 76951 transitions. [2021-11-06 18:36:11,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 18:36:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 60506 states and 76951 transitions. [2021-11-06 18:36:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-06 18:36:11,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:36:11,697 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:36:11,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 18:36:11,698 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:36:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:36:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1053030962, now seen corresponding path program 1 times [2021-11-06 18:36:11,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:36:11,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311071161] [2021-11-06 18:36:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:36:11,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:36:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:36:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:36:11,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:36:11,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311071161] [2021-11-06 18:36:11,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311071161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:36:11,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:36:11,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:36:11,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896495748] [2021-11-06 18:36:11,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:36:11,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:36:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:36:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:36:11,780 INFO L87 Difference]: Start difference. First operand 60506 states and 76951 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 18:36:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:36:15,231 INFO L93 Difference]: Finished difference Result 186615 states and 237419 transitions. [2021-11-06 18:36:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:36:15,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 179 [2021-11-06 18:36:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:36:15,452 INFO L225 Difference]: With dead ends: 186615 [2021-11-06 18:36:15,453 INFO L226 Difference]: Without dead ends: 126976 [2021-11-06 18:36:15,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:36:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126976 states. [2021-11-06 18:36:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126976 to 67457. [2021-11-06 18:36:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67457 states, 67445 states have (on average 1.2731410779153385) internal successors, (85867), 67456 states have internal predecessors, (85867), 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 18:36:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67457 states to 67457 states and 85867 transitions. [2021-11-06 18:36:17,897 INFO L78 Accepts]: Start accepts. Automaton has 67457 states and 85867 transitions. Word has length 179 [2021-11-06 18:36:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:36:17,898 INFO L470 AbstractCegarLoop]: Abstraction has 67457 states and 85867 transitions. [2021-11-06 18:36:17,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 18:36:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 67457 states and 85867 transitions. [2021-11-06 18:36:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 18:36:17,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:36:17,918 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:36:17,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 18:36:17,918 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-06 18:36:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:36:17,918 INFO L85 PathProgramCache]: Analyzing trace with hash 944978064, now seen corresponding path program 1 times [2021-11-06 18:36:17,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:36:17,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765337066] [2021-11-06 18:36:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:36:17,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:36:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:36:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:36:18,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:36:18,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765337066] [2021-11-06 18:36:18,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765337066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:36:18,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:36:18,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:36:18,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857317059] [2021-11-06 18:36:18,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:36:18,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:36:18,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:36:18,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:36:18,012 INFO L87 Difference]: Start difference. First operand 67457 states and 85867 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 18:36:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:36:21,581 INFO L93 Difference]: Finished difference Result 200547 states and 255311 transitions. [2021-11-06 18:36:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:36:21,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 180 [2021-11-06 18:36:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:36:21,926 INFO L225 Difference]: With dead ends: 200547 [2021-11-06 18:36:21,927 INFO L226 Difference]: Without dead ends: 133957 [2021-11-06 18:36:22,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:36:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133957 states.