./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.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 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:29:34,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:29:34,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:29:34,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:29:34,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:29:34,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:29:34,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:29:34,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:29:34,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:29:34,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:29:34,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:29:34,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:29:34,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:29:34,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:29:34,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:29:34,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:29:34,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:29:34,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:29:34,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:29:34,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:29:34,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:29:34,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:29:34,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:29:34,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:29:34,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:29:34,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:29:34,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:29:34,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:29:34,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:29:34,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:29:34,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:29:34,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:29:34,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:29:34,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:29:34,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:29:34,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:29:34,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:29:34,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:29:34,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:29:34,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:29:34,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:29:34,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:29:34,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:29:34,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:29:34,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:29:34,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:29:34,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:29:34,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:29:34,858 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:29:34,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:29:34,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:29:34,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:29:34,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:29:34,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:29:34,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:29:34,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:29:34,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:29:34,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:29:34,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:29:34,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:29:34,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:29:34,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:29:34,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:29:34,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:29:34,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:29:34,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:29:34,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:29:34,861 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:29:34,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:29:34,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:29:34,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:29:34,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd [2021-11-07 12:29:35,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:29:35,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:29:35,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:29:35,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:29:35,103 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:29:35,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2021-11-07 12:29:35,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745d234bd/b897f3fc8437492eb24df8e56d2d40c0/FLAG1d00f8fd8 [2021-11-07 12:29:35,605 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:29:35,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2021-11-07 12:29:35,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745d234bd/b897f3fc8437492eb24df8e56d2d40c0/FLAG1d00f8fd8 [2021-11-07 12:29:35,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745d234bd/b897f3fc8437492eb24df8e56d2d40c0 [2021-11-07 12:29:35,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:29:35,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:29:35,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:29:35,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:29:35,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:29:35,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:35" (1/1) ... [2021-11-07 12:29:35,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58eb94d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:35, skipping insertion in model container [2021-11-07 12:29:35,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:35" (1/1) ... [2021-11-07 12:29:35,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:29:35,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:29:36,853 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-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2021-11-07 12:29:36,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:29:36,912 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:29:37,117 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-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2021-11-07 12:29:37,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:29:37,184 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:29:37,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37 WrapperNode [2021-11-07 12:29:37,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:29:37,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:29:37,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:29:37,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:29:37,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:29:37,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:29:37,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:29:37,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:29:37,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:29:37,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:29:37,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:29:37,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:29:37,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (1/1) ... [2021-11-07 12:29:37,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:29:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:29:37,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 12:29:37,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 12:29:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:29:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:29:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:29:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:29:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:29:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:29:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:29:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:29:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 12:29:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:29:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:29:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:29:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:29:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:29:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:29:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:29:52,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:29:52,507 INFO L299 CfgBuilder]: Removed 1020 assume(true) statements. [2021-11-07 12:29:52,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:52 BoogieIcfgContainer [2021-11-07 12:29:52,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:29:52,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:29:52,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:29:52,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:29:52,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:29:35" (1/3) ... [2021-11-07 12:29:52,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7608b471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:52, skipping insertion in model container [2021-11-07 12:29:52,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:37" (2/3) ... [2021-11-07 12:29:52,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7608b471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:52, skipping insertion in model container [2021-11-07 12:29:52,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:52" (3/3) ... [2021-11-07 12:29:52,517 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2021-11-07 12:29:52,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:29:52,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 12:29:52,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:29:52,572 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 12:29:52,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 12:29:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 1244 states, 1232 states have (on average 1.4772727272727273) internal successors, (1820), 1243 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 12:29:52,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:52,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:52,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:52,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash 117582026, now seen corresponding path program 1 times [2021-11-07 12:29:52,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:52,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143935982] [2021-11-07 12:29:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:52,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:52,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:52,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143935982] [2021-11-07 12:29:52,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143935982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:52,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:52,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:52,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067130642] [2021-11-07 12:29:52,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:52,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:52,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:52,898 INFO L87 Difference]: Start difference. First operand has 1244 states, 1232 states have (on average 1.4772727272727273) internal successors, (1820), 1243 states have internal predecessors, (1820), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:53,008 INFO L93 Difference]: Finished difference Result 2480 states and 3631 transitions. [2021-11-07 12:29:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:53,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 12:29:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:53,023 INFO L225 Difference]: With dead ends: 2480 [2021-11-07 12:29:53,023 INFO L226 Difference]: Without dead ends: 1238 [2021-11-07 12:29:53,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:53,031 INFO L933 BasicCegarLoop]: 1798 mSDtfsCounter, 1793 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.50ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:53,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1793 Valid, 1798 Invalid, 2 Unknown, 0 Unchecked, 7.79ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 29.50ms Time] [2021-11-07 12:29:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-11-07 12:29:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1238. [2021-11-07 12:29:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1228 states have (on average 1.461726384364821) internal successors, (1795), 1237 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1795 transitions. [2021-11-07 12:29:53,106 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1795 transitions. Word has length 8 [2021-11-07 12:29:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:53,106 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1795 transitions. [2021-11-07 12:29:53,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1795 transitions. [2021-11-07 12:29:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 12:29:53,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:53,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:53,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:29:53,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash -649921806, now seen corresponding path program 1 times [2021-11-07 12:29:53,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:53,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425800541] [2021-11-07 12:29:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:53,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:53,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:53,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425800541] [2021-11-07 12:29:53,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425800541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:53,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:53,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:53,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794025209] [2021-11-07 12:29:53,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:53,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:53,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:53,183 INFO L87 Difference]: Start difference. First operand 1238 states and 1795 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:53,236 INFO L93 Difference]: Finished difference Result 1238 states and 1795 transitions. [2021-11-07 12:29:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:53,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-11-07 12:29:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:53,240 INFO L225 Difference]: With dead ends: 1238 [2021-11-07 12:29:53,241 INFO L226 Difference]: Without dead ends: 1236 [2021-11-07 12:29:53,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:53,246 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1786 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.69ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:53,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 1792 Invalid, 2 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 23.69ms Time] [2021-11-07 12:29:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-07 12:29:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2021-11-07 12:29:53,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1227 states have (on average 1.4612876935615322) internal successors, (1793), 1235 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1793 transitions. [2021-11-07 12:29:53,282 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1793 transitions. Word has length 9 [2021-11-07 12:29:53,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:53,283 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1793 transitions. [2021-11-07 12:29:53,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1793 transitions. [2021-11-07 12:29:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 12:29:53,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:53,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:53,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:29:53,287 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:53,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1327263188, now seen corresponding path program 1 times [2021-11-07 12:29:53,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:53,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719417638] [2021-11-07 12:29:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:53,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:53,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:53,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719417638] [2021-11-07 12:29:53,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719417638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:53,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:53,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:53,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074126233] [2021-11-07 12:29:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:53,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:53,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:53,366 INFO L87 Difference]: Start difference. First operand 1236 states and 1793 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:53,511 INFO L93 Difference]: Finished difference Result 3633 states and 5285 transitions. [2021-11-07 12:29:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 12:29:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:53,519 INFO L225 Difference]: With dead ends: 3633 [2021-11-07 12:29:53,520 INFO L226 Difference]: Without dead ends: 2398 [2021-11-07 12:29:53,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:53,529 INFO L933 BasicCegarLoop]: 2759 mSDtfsCounter, 1763 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.03ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.02ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:53,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1763 Valid, 4453 Invalid, 42 Unknown, 0 Unchecked, 8.03ms Time], IncrementalHoareTripleChecker [16 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 79.02ms Time] [2021-11-07 12:29:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-11-07 12:29:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2390. [2021-11-07 12:29:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2381 states have (on average 1.4603107937841244) internal successors, (3477), 2389 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3477 transitions. [2021-11-07 12:29:53,605 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3477 transitions. Word has length 10 [2021-11-07 12:29:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:53,606 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3477 transitions. [2021-11-07 12:29:53,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3477 transitions. [2021-11-07 12:29:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 12:29:53,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:53,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:53,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:29:53,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1775708122, now seen corresponding path program 1 times [2021-11-07 12:29:53,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:53,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38061259] [2021-11-07 12:29:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:53,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:53,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:53,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38061259] [2021-11-07 12:29:53,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38061259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:53,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:53,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:53,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010271641] [2021-11-07 12:29:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:53,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:53,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:53,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:53,651 INFO L87 Difference]: Start difference. First operand 2390 states and 3477 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:53,783 INFO L93 Difference]: Finished difference Result 6379 states and 9297 transitions. [2021-11-07 12:29:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:53,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-07 12:29:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:53,796 INFO L225 Difference]: With dead ends: 6379 [2021-11-07 12:29:53,797 INFO L226 Difference]: Without dead ends: 3995 [2021-11-07 12:29:53,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:53,802 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 1199 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.58ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.05ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:53,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 3538 Invalid, 24 Unknown, 0 Unchecked, 24.58ms Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 27.05ms Time] [2021-11-07 12:29:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2021-11-07 12:29:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3230. [2021-11-07 12:29:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3230 states, 3221 states have (on average 1.4604160198696057) internal successors, (4704), 3229 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 4704 transitions. [2021-11-07 12:29:53,890 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 4704 transitions. Word has length 26 [2021-11-07 12:29:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:53,890 INFO L470 AbstractCegarLoop]: Abstraction has 3230 states and 4704 transitions. [2021-11-07 12:29:53,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 4704 transitions. [2021-11-07 12:29:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 12:29:53,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:53,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:53,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:29:53,893 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1925451413, now seen corresponding path program 1 times [2021-11-07 12:29:53,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:53,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160614304] [2021-11-07 12:29:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:53,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:53,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:53,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160614304] [2021-11-07 12:29:53,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160614304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:53,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:53,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:29:53,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64671349] [2021-11-07 12:29:53,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:53,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:29:53,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:53,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:29:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:53,962 INFO L87 Difference]: Start difference. First operand 3230 states and 4704 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:54,313 INFO L93 Difference]: Finished difference Result 5476 states and 7904 transitions. [2021-11-07 12:29:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:29:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2021-11-07 12:29:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:54,329 INFO L225 Difference]: With dead ends: 5476 [2021-11-07 12:29:54,330 INFO L226 Difference]: Without dead ends: 4722 [2021-11-07 12:29:54,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.39ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:29:54,334 INFO L933 BasicCegarLoop]: 3369 mSDtfsCounter, 2839 mSDsluCounter, 8339 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 11708 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.21ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.15ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:54,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 11708 Invalid, 134 Unknown, 0 Unchecked, 12.21ms Time], IncrementalHoareTripleChecker [24 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 183.15ms Time] [2021-11-07 12:29:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2021-11-07 12:29:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 2480. [2021-11-07 12:29:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2471 states have (on average 1.4552812626467018) internal successors, (3596), 2479 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3596 transitions. [2021-11-07 12:29:54,444 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3596 transitions. Word has length 31 [2021-11-07 12:29:54,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:54,444 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 3596 transitions. [2021-11-07 12:29:54,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3596 transitions. [2021-11-07 12:29:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 12:29:54,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:54,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:54,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:29:54,448 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:54,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1667285975, now seen corresponding path program 1 times [2021-11-07 12:29:54,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:54,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970842202] [2021-11-07 12:29:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:54,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:54,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:54,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970842202] [2021-11-07 12:29:54,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970842202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:54,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:54,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:54,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667079192] [2021-11-07 12:29:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:54,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:54,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:54,542 INFO L87 Difference]: Start difference. First operand 2480 states and 3596 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:54,693 INFO L93 Difference]: Finished difference Result 4950 states and 7184 transitions. [2021-11-07 12:29:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-11-07 12:29:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:54,701 INFO L225 Difference]: With dead ends: 4950 [2021-11-07 12:29:54,702 INFO L226 Difference]: Without dead ends: 2476 [2021-11-07 12:29:54,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:54,708 INFO L933 BasicCegarLoop]: 1937 mSDtfsCounter, 1690 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.82ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.28ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:54,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 2583 Invalid, 31 Unknown, 0 Unchecked, 8.82ms Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 71.28ms Time] [2021-11-07 12:29:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-11-07 12:29:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2469. [2021-11-07 12:29:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2462 states have (on average 1.4520714865962632) internal successors, (3575), 2468 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3575 transitions. [2021-11-07 12:29:54,776 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3575 transitions. Word has length 31 [2021-11-07 12:29:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:54,777 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 3575 transitions. [2021-11-07 12:29:54,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3575 transitions. [2021-11-07 12:29:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 12:29:54,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:54,778 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:54,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:29:54,779 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1853261783, now seen corresponding path program 1 times [2021-11-07 12:29:54,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:54,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819980445] [2021-11-07 12:29:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:54,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:54,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:54,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819980445] [2021-11-07 12:29:54,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819980445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:54,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:54,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:29:54,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432237687] [2021-11-07 12:29:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:54,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:29:54,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:29:54,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:54,910 INFO L87 Difference]: Start difference. First operand 2469 states and 3575 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:55,357 INFO L93 Difference]: Finished difference Result 4841 states and 6955 transitions. [2021-11-07 12:29:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 12:29:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-11-07 12:29:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:55,372 INFO L225 Difference]: With dead ends: 4841 [2021-11-07 12:29:55,372 INFO L226 Difference]: Without dead ends: 4681 [2021-11-07 12:29:55,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 54.03ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:29:55,377 INFO L933 BasicCegarLoop]: 3184 mSDtfsCounter, 6383 mSDsluCounter, 3967 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6383 SdHoareTripleChecker+Valid, 7151 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.62ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.07ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:55,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6383 Valid, 7151 Invalid, 140 Unknown, 0 Unchecked, 13.62ms Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 221.07ms Time] [2021-11-07 12:29:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2021-11-07 12:29:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 2461. [2021-11-07 12:29:55,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2454 states have (on average 1.4519152404237978) internal successors, (3563), 2460 states have internal predecessors, (3563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3563 transitions. [2021-11-07 12:29:55,477 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3563 transitions. Word has length 33 [2021-11-07 12:29:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:55,478 INFO L470 AbstractCegarLoop]: Abstraction has 2461 states and 3563 transitions. [2021-11-07 12:29:55,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3563 transitions. [2021-11-07 12:29:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 12:29:55,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:55,481 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:55,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:29:55,482 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash -711577619, now seen corresponding path program 1 times [2021-11-07 12:29:55,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:55,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550634413] [2021-11-07 12:29:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:55,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:55,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:55,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550634413] [2021-11-07 12:29:55,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550634413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:55,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:55,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:29:55,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124280399] [2021-11-07 12:29:55,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:55,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:29:55,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:55,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:29:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:29:55,538 INFO L87 Difference]: Start difference. First operand 2461 states and 3563 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:55,637 INFO L93 Difference]: Finished difference Result 4927 states and 7131 transitions. [2021-11-07 12:29:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:29:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2021-11-07 12:29:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:55,645 INFO L225 Difference]: With dead ends: 4927 [2021-11-07 12:29:55,646 INFO L226 Difference]: Without dead ends: 2470 [2021-11-07 12:29:55,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:55,651 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 15 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.38ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:55,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 5360 Invalid, 9 Unknown, 0 Unchecked, 4.15ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 17.38ms Time] [2021-11-07 12:29:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-11-07 12:29:55,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2463. [2021-11-07 12:29:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2456 states have (on average 1.4511400651465798) internal successors, (3564), 2462 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3564 transitions. [2021-11-07 12:29:55,728 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3564 transitions. Word has length 40 [2021-11-07 12:29:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:55,729 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 3564 transitions. [2021-11-07 12:29:55,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3564 transitions. [2021-11-07 12:29:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 12:29:55,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:55,731 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:55,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:29:55,731 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 73641365, now seen corresponding path program 1 times [2021-11-07 12:29:55,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:55,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10691568] [2021-11-07 12:29:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:55,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:29:55,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:55,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10691568] [2021-11-07 12:29:55,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10691568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:55,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:55,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:29:55,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250770627] [2021-11-07 12:29:55,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:55,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:29:55,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:29:55,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:55,819 INFO L87 Difference]: Start difference. First operand 2463 states and 3564 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:56,361 INFO L93 Difference]: Finished difference Result 11850 states and 17038 transitions. [2021-11-07 12:29:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:29:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 46 [2021-11-07 12:29:56,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:56,399 INFO L225 Difference]: With dead ends: 11850 [2021-11-07 12:29:56,400 INFO L226 Difference]: Without dead ends: 9393 [2021-11-07 12:29:56,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.71ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:29:56,410 INFO L933 BasicCegarLoop]: 4147 mSDtfsCounter, 6713 mSDsluCounter, 11521 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6713 SdHoareTripleChecker+Valid, 15668 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.08ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.73ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:56,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6713 Valid, 15668 Invalid, 81 Unknown, 0 Unchecked, 21.08ms Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 113.73ms Time] [2021-11-07 12:29:56,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9393 states. [2021-11-07 12:29:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9393 to 2376. [2021-11-07 12:29:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2370 states have (on average 1.4464135021097047) internal successors, (3428), 2375 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3428 transitions. [2021-11-07 12:29:56,555 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3428 transitions. Word has length 46 [2021-11-07 12:29:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:56,556 INFO L470 AbstractCegarLoop]: Abstraction has 2376 states and 3428 transitions. [2021-11-07 12:29:56,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3428 transitions. [2021-11-07 12:29:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 12:29:56,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:56,558 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:56,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:29:56,559 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:56,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash 671326723, now seen corresponding path program 1 times [2021-11-07 12:29:56,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:56,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377257757] [2021-11-07 12:29:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:56,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:56,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:56,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377257757] [2021-11-07 12:29:56,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377257757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:29:56,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224029116] [2021-11-07 12:29:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:56,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:29:56,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:29:56,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:29:56,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:29:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:56,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:29:56,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:29:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:57,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:29:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:57,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224029116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:29:57,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:29:57,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-07 12:29:57,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269426210] [2021-11-07 12:29:57,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:29:57,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:29:57,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:57,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:29:57,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:57,319 INFO L87 Difference]: Start difference. First operand 2376 states and 3428 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:57,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:57,578 INFO L93 Difference]: Finished difference Result 6451 states and 9321 transitions. [2021-11-07 12:29:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:29:57,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 [2021-11-07 12:29:57,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:57,587 INFO L225 Difference]: With dead ends: 6451 [2021-11-07 12:29:57,588 INFO L226 Difference]: Without dead ends: 4081 [2021-11-07 12:29:57,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.67ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:57,593 INFO L933 BasicCegarLoop]: 1787 mSDtfsCounter, 4983 mSDsluCounter, 5532 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4983 SdHoareTripleChecker+Valid, 7319 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.20ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:57,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4983 Valid, 7319 Invalid, 50 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 54.20ms Time] [2021-11-07 12:29:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-11-07 12:29:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 4034. [2021-11-07 12:29:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4034 states, 4028 states have (on average 1.452333664349553) internal successors, (5850), 4033 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 5850 transitions. [2021-11-07 12:29:57,752 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 5850 transitions. Word has length 48 [2021-11-07 12:29:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:57,753 INFO L470 AbstractCegarLoop]: Abstraction has 4034 states and 5850 transitions. [2021-11-07 12:29:57,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 5850 transitions. [2021-11-07 12:29:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 12:29:57,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:57,755 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:57,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 12:29:57,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 12:29:57,972 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:57,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1956285314, now seen corresponding path program 1 times [2021-11-07 12:29:57,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:57,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860900767] [2021-11-07 12:29:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:57,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:29:58,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:58,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860900767] [2021-11-07 12:29:58,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860900767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:58,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:58,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:29:58,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623777407] [2021-11-07 12:29:58,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:58,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:29:58,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:29:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:58,056 INFO L87 Difference]: Start difference. First operand 4034 states and 5850 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:58,469 INFO L93 Difference]: Finished difference Result 12374 states and 17916 transitions. [2021-11-07 12:29:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:29:58,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 50 [2021-11-07 12:29:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:58,545 INFO L225 Difference]: With dead ends: 12374 [2021-11-07 12:29:58,547 INFO L226 Difference]: Without dead ends: 8346 [2021-11-07 12:29:58,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.24ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:29:58,555 INFO L933 BasicCegarLoop]: 3429 mSDtfsCounter, 4223 mSDsluCounter, 5871 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4223 SdHoareTripleChecker+Valid, 9300 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.45ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.25ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:58,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4223 Valid, 9300 Invalid, 74 Unknown, 0 Unchecked, 12.45ms Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 86.25ms Time] [2021-11-07 12:29:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8346 states. [2021-11-07 12:29:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8346 to 4035. [2021-11-07 12:29:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 4029 states have (on average 1.4519731943410275) internal successors, (5850), 4034 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 5850 transitions. [2021-11-07 12:29:58,738 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 5850 transitions. Word has length 50 [2021-11-07 12:29:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:58,739 INFO L470 AbstractCegarLoop]: Abstraction has 4035 states and 5850 transitions. [2021-11-07 12:29:58,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 5850 transitions. [2021-11-07 12:29:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 12:29:58,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:58,743 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:58,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:29:58,743 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1224280972, now seen corresponding path program 1 times [2021-11-07 12:29:58,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:58,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003198399] [2021-11-07 12:29:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:58,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:29:58,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:58,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003198399] [2021-11-07 12:29:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003198399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:58,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:58,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:29:58,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038013654] [2021-11-07 12:29:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:58,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:29:58,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:29:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:29:58,857 INFO L87 Difference]: Start difference. First operand 4035 states and 5850 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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) [2021-11-07 12:29:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:59,226 INFO L93 Difference]: Finished difference Result 8288 states and 11997 transitions. [2021-11-07 12:29:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 12:29:59,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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 66 [2021-11-07 12:29:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:59,234 INFO L225 Difference]: With dead ends: 8288 [2021-11-07 12:29:59,235 INFO L226 Difference]: Without dead ends: 4242 [2021-11-07 12:29:59,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 109.68ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-07 12:29:59,242 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 459 mSDsluCounter, 10550 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 12754 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.52ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.11ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:59,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 12754 Invalid, 90 Unknown, 0 Unchecked, 9.52ms Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 102.11ms Time] [2021-11-07 12:29:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2021-11-07 12:29:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 4027. [2021-11-07 12:29:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4021 states have (on average 1.45162894802288) internal successors, (5837), 4026 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5837 transitions. [2021-11-07 12:29:59,437 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5837 transitions. Word has length 66 [2021-11-07 12:29:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:59,438 INFO L470 AbstractCegarLoop]: Abstraction has 4027 states and 5837 transitions. [2021-11-07 12:29:59,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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) [2021-11-07 12:29:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5837 transitions. [2021-11-07 12:29:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 12:29:59,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:59,443 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:59,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:29:59,444 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1634615129, now seen corresponding path program 1 times [2021-11-07 12:29:59,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:59,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458903763] [2021-11-07 12:29:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:59,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:29:59,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:59,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458903763] [2021-11-07 12:29:59,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458903763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:59,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:59,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:59,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006115705] [2021-11-07 12:29:59,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:59,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:59,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:59,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:59,496 INFO L87 Difference]: Start difference. First operand 4027 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:59,790 INFO L93 Difference]: Finished difference Result 8080 states and 11700 transitions. [2021-11-07 12:29:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:59,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 90 [2021-11-07 12:29:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:59,800 INFO L225 Difference]: With dead ends: 8080 [2021-11-07 12:29:59,800 INFO L226 Difference]: Without dead ends: 4059 [2021-11-07 12:29:59,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:59,807 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 0 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.47ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:59,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3376 Invalid, 173 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [75 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 151.47ms Time] [2021-11-07 12:29:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2021-11-07 12:29:59,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 4027. [2021-11-07 12:29:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4021 states have (on average 1.4277542899776174) internal successors, (5741), 4026 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5741 transitions. [2021-11-07 12:29:59,949 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5741 transitions. Word has length 90 [2021-11-07 12:29:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:59,950 INFO L470 AbstractCegarLoop]: Abstraction has 4027 states and 5741 transitions. [2021-11-07 12:29:59,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5741 transitions. [2021-11-07 12:29:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 12:29:59,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:59,955 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:59,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 12:29:59,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:29:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash 500675232, now seen corresponding path program 1 times [2021-11-07 12:29:59,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:59,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901915468] [2021-11-07 12:29:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:59,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:30:00,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:00,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901915468] [2021-11-07 12:30:00,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901915468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:00,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:00,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:30:00,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510149099] [2021-11-07 12:30:00,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:00,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:30:00,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:00,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:30:00,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:30:00,071 INFO L87 Difference]: Start difference. First operand 4027 states and 5741 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:00,666 INFO L93 Difference]: Finished difference Result 11521 states and 16435 transitions. [2021-11-07 12:30:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 12:30:00,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 93 [2021-11-07 12:30:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:00,702 INFO L225 Difference]: With dead ends: 11521 [2021-11-07 12:30:00,703 INFO L226 Difference]: Without dead ends: 11335 [2021-11-07 12:30:00,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.31ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:30:00,709 INFO L933 BasicCegarLoop]: 3320 mSDtfsCounter, 4988 mSDsluCounter, 8394 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 11714 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.03ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:00,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4988 Valid, 11714 Invalid, 53 Unknown, 0 Unchecked, 12.36ms Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 79.03ms Time] [2021-11-07 12:30:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11335 states. [2021-11-07 12:30:00,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11335 to 3841. [2021-11-07 12:30:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3836 states have (on average 1.4290928050052139) internal successors, (5482), 3840 states have internal predecessors, (5482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5482 transitions. [2021-11-07 12:30:00,912 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5482 transitions. Word has length 93 [2021-11-07 12:30:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:00,913 INFO L470 AbstractCegarLoop]: Abstraction has 3841 states and 5482 transitions. [2021-11-07 12:30:00,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5482 transitions. [2021-11-07 12:30:00,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 12:30:00,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:00,918 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:30:00,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 12:30:00,918 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:30:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1207829173, now seen corresponding path program 1 times [2021-11-07 12:30:00,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:00,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819524415] [2021-11-07 12:30:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:00,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:30:01,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:01,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819524415] [2021-11-07 12:30:01,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819524415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:01,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:01,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:30:01,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131575687] [2021-11-07 12:30:01,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:01,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:30:01,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:30:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:30:01,011 INFO L87 Difference]: Start difference. First operand 3841 states and 5482 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:02,179 INFO L93 Difference]: Finished difference Result 19022 states and 27140 transitions. [2021-11-07 12:30:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 12:30:02,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 95 [2021-11-07 12:30:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:02,219 INFO L225 Difference]: With dead ends: 19022 [2021-11-07 12:30:02,219 INFO L226 Difference]: Without dead ends: 19015 [2021-11-07 12:30:02,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 150.47ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-11-07 12:30:02,226 INFO L933 BasicCegarLoop]: 6340 mSDtfsCounter, 9031 mSDsluCounter, 16628 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9031 SdHoareTripleChecker+Valid, 22968 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.18ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.25ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:02,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9031 Valid, 22968 Invalid, 159 Unknown, 0 Unchecked, 25.18ms Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 188.25ms Time] [2021-11-07 12:30:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19015 states. [2021-11-07 12:30:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19015 to 3841. [2021-11-07 12:30:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3836 states have (on average 1.4288321167883211) internal successors, (5481), 3840 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5481 transitions. [2021-11-07 12:30:02,490 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5481 transitions. Word has length 95 [2021-11-07 12:30:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:02,490 INFO L470 AbstractCegarLoop]: Abstraction has 3841 states and 5481 transitions. [2021-11-07 12:30:02,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5481 transitions. [2021-11-07 12:30:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 12:30:02,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:02,496 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-07 12:30:02,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 12:30:02,496 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:30:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:02,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1817524878, now seen corresponding path program 1 times [2021-11-07 12:30:02,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:02,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357314122] [2021-11-07 12:30:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:02,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:30:02,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:02,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357314122] [2021-11-07 12:30:02,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357314122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:02,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:02,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:30:02,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702858692] [2021-11-07 12:30:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:02,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:30:02,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:02,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:30:02,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:30:02,555 INFO L87 Difference]: Start difference. First operand 3841 states and 5481 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:02,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:02,826 INFO L93 Difference]: Finished difference Result 8487 states and 12118 transitions. [2021-11-07 12:30:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:30:02,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 97 [2021-11-07 12:30:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:02,833 INFO L225 Difference]: With dead ends: 8487 [2021-11-07 12:30:02,833 INFO L226 Difference]: Without dead ends: 4652 [2021-11-07 12:30:02,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.83ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:30:02,838 INFO L933 BasicCegarLoop]: 2889 mSDtfsCounter, 1437 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 6036 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.09ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:02,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 6036 Invalid, 37 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 31.09ms Time] [2021-11-07 12:30:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2021-11-07 12:30:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4641. [2021-11-07 12:30:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4637 states have (on average 1.4291567824024154) internal successors, (6627), 4640 states have internal predecessors, (6627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 6627 transitions. [2021-11-07 12:30:03,048 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 6627 transitions. Word has length 97 [2021-11-07 12:30:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:03,048 INFO L470 AbstractCegarLoop]: Abstraction has 4641 states and 6627 transitions. [2021-11-07 12:30:03,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 6627 transitions. [2021-11-07 12:30:03,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 12:30:03,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:03,054 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-07 12:30:03,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 12:30:03,054 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:30:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1654482286, now seen corresponding path program 1 times [2021-11-07 12:30:03,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:03,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69970080] [2021-11-07 12:30:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:03,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 12:30:03,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:03,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69970080] [2021-11-07 12:30:03,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69970080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:03,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:03,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:30:03,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184983536] [2021-11-07 12:30:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:03,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:30:03,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:30:03,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:30:03,230 INFO L87 Difference]: Start difference. First operand 4641 states and 6627 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:04,544 INFO L93 Difference]: Finished difference Result 22368 states and 32047 transitions. [2021-11-07 12:30:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:30:04,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 102 [2021-11-07 12:30:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:04,578 INFO L225 Difference]: With dead ends: 22368 [2021-11-07 12:30:04,579 INFO L226 Difference]: Without dead ends: 17728 [2021-11-07 12:30:04,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 101.53ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 12:30:04,592 INFO L933 BasicCegarLoop]: 3391 mSDtfsCounter, 13217 mSDsluCounter, 16463 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13217 SdHoareTripleChecker+Valid, 19854 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.28ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.42ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:04,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13217 Valid, 19854 Invalid, 186 Unknown, 0 Unchecked, 25.28ms Time], IncrementalHoareTripleChecker [16 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 199.42ms Time] [2021-11-07 12:30:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2021-11-07 12:30:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 4646. [2021-11-07 12:30:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 4642 states have (on average 1.4284791038345541) internal successors, (6631), 4645 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 6631 transitions. [2021-11-07 12:30:04,969 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 6631 transitions. Word has length 102 [2021-11-07 12:30:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:04,969 INFO L470 AbstractCegarLoop]: Abstraction has 4646 states and 6631 transitions. [2021-11-07 12:30:04,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 6631 transitions. [2021-11-07 12:30:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 12:30:04,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:04,976 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-07 12:30:04,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:30:04,976 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:30:04,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1534575184, now seen corresponding path program 1 times [2021-11-07 12:30:04,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:04,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209893153] [2021-11-07 12:30:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:04,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:30:05,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:05,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209893153] [2021-11-07 12:30:05,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209893153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:05,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:05,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:30:05,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248465632] [2021-11-07 12:30:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:05,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:30:05,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:30:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:30:05,092 INFO L87 Difference]: Start difference. First operand 4646 states and 6631 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:06,879 INFO L93 Difference]: Finished difference Result 21334 states and 30275 transitions. [2021-11-07 12:30:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 12:30:06,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 105 [2021-11-07 12:30:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:06,905 INFO L225 Difference]: With dead ends: 21334 [2021-11-07 12:30:06,905 INFO L226 Difference]: Without dead ends: 16694 [2021-11-07 12:30:06,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 91.88ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:30:06,915 INFO L933 BasicCegarLoop]: 3404 mSDtfsCounter, 8417 mSDsluCounter, 8521 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 392.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8417 SdHoareTripleChecker+Valid, 11925 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.69ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 454.16ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:06,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8417 Valid, 11925 Invalid, 414 Unknown, 0 Unchecked, 19.69ms Time], IncrementalHoareTripleChecker [74 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 454.16ms Time] [2021-11-07 12:30:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2021-11-07 12:30:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 4664. [2021-11-07 12:30:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 4660 states have (on average 1.426824034334764) internal successors, (6649), 4663 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6649 transitions. [2021-11-07 12:30:07,354 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 6649 transitions. Word has length 105 [2021-11-07 12:30:07,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:07,354 INFO L470 AbstractCegarLoop]: Abstraction has 4664 states and 6649 transitions. [2021-11-07 12:30:07,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 6649 transitions. [2021-11-07 12:30:07,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 12:30:07,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:07,361 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-07 12:30:07,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 12:30:07,361 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:30:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1239516634, now seen corresponding path program 1 times [2021-11-07 12:30:07,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:07,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774782054] [2021-11-07 12:30:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:07,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 12:30:07,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:07,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774782054] [2021-11-07 12:30:07,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774782054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:07,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:07,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:30:07,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042509261] [2021-11-07 12:30:07,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:07,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:30:07,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:07,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:30:07,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:07,424 INFO L87 Difference]: Start difference. First operand 4664 states and 6649 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:08,090 INFO L93 Difference]: Finished difference Result 9366 states and 13336 transitions. [2021-11-07 12:30:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:30:08,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 109 [2021-11-07 12:30:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:08,098 INFO L225 Difference]: With dead ends: 9366 [2021-11-07 12:30:08,098 INFO L226 Difference]: Without dead ends: 4708 [2021-11-07 12:30:08,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:08,105 INFO L933 BasicCegarLoop]: 1652 mSDtfsCounter, 0 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 242.25ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:08,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3180 Invalid, 284 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [124 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 242.25ms Time] [2021-11-07 12:30:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-11-07 12:30:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4664. [2021-11-07 12:30:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 4660 states have (on average 1.3984978540772532) internal successors, (6517), 4663 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6517 transitions. [2021-11-07 12:30:08,518 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 6517 transitions. Word has length 109 [2021-11-07 12:30:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:08,518 INFO L470 AbstractCegarLoop]: Abstraction has 4664 states and 6517 transitions. [2021-11-07 12:30:08,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 6517 transitions. [2021-11-07 12:30:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 12:30:08,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:08,524 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-07 12:30:08,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 12:30:08,524 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:30:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1828309856, now seen corresponding path program 1 times [2021-11-07 12:30:08,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:08,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258185373] [2021-11-07 12:30:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:08,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:30:08,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:08,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258185373] [2021-11-07 12:30:08,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258185373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:08,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:08,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:30:08,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290535052] [2021-11-07 12:30:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:08,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:30:08,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:30:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:30:08,612 INFO L87 Difference]: Start difference. First operand 4664 states and 6517 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:09,386 INFO L93 Difference]: Finished difference Result 9402 states and 13139 transitions. [2021-11-07 12:30:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:30:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 12:30:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:09,387 INFO L225 Difference]: With dead ends: 9402 [2021-11-07 12:30:09,387 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 12:30:09,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.01ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:30:09,397 INFO L933 BasicCegarLoop]: 3197 mSDtfsCounter, 3685 mSDsluCounter, 4798 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 7995 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.83ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.32ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:09,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3685 Valid, 7995 Invalid, 53 Unknown, 0 Unchecked, 8.83ms Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 70.32ms Time] [2021-11-07 12:30:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 12:30:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 12:30:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 12:30:09,398 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2021-11-07 12:30:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:09,399 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 12:30:09,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:30:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 12:30:09,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 12:30:09,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-11-07 12:30:09,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-11-07 12:30:09,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-11-07 12:30:09,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-11-07 12:30:09,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-11-07 12:30:09,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-11-07 12:30:09,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-11-07 12:30:09,402 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-11-07 12:30:09,403 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-11-07 12:30:09,403 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-11-07 12:30:09,403 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-11-07 12:30:09,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 12:30:09,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 12:35:56,332 WARN L227 SmtUtils]: Spent 5.60m on a formula simplification that was a NOOP. DAG size: 121 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15