./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.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/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.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 3d54ec533bcab354bf7ab20b9139a2cc0ce3cf7423a4c806e696ce4b9d5812e9 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:19:07,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:19:07,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:19:07,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:19:07,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:19:07,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:19:07,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:19:07,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:19:07,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:19:07,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:19:07,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:19:07,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:19:07,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:19:07,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:19:07,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:19:07,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:19:07,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:19:07,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:19:07,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:19:07,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:19:07,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:19:07,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:19:07,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:19:07,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:19:07,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:19:07,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:19:07,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:19:07,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:19:07,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:19:07,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:19:07,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:19:07,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:19:07,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:19:07,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:19:07,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:19:07,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:19:07,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:19:07,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:19:07,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:19:07,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:19:07,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:19:07,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:19:07,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:19:07,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:19:07,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:19:07,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:19:07,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:19:07,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:19:07,954 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:19:07,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:19:07,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:19:07,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:19:07,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:19:07,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:19:07,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:19:07,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:19:07,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:19:07,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:19:07,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:19:07,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:19:07,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:19:07,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:19:07,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:19:07,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:19:07,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:19:07,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:19:07,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:19:07,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:19:07,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:19:07,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:19:07,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:19:07,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d54ec533bcab354bf7ab20b9139a2cc0ce3cf7423a4c806e696ce4b9d5812e9 [2021-11-07 12:19:08,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:19:08,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:19:08,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:19:08,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:19:08,183 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:19:08,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2021-11-07 12:19:08,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e94c102/96c260dcbd4b42719693bb0c650f03fa/FLAG97e32b6c2 [2021-11-07 12:19:08,713 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:19:08,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2021-11-07 12:19:08,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e94c102/96c260dcbd4b42719693bb0c650f03fa/FLAG97e32b6c2 [2021-11-07 12:19:08,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e94c102/96c260dcbd4b42719693bb0c650f03fa [2021-11-07 12:19:09,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:19:09,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:19:09,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:19:09,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:19:09,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:19:09,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:09,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279d3a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09, skipping insertion in model container [2021-11-07 12:19:09,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:09,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:19:09,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:19:09,665 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/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i[129019,129032] [2021-11-07 12:19:09,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:19:09,737 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:19:09,938 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/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i[129019,129032] [2021-11-07 12:19:09,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:19:09,996 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:19:09,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09 WrapperNode [2021-11-07 12:19:09,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:19:09,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:19:09,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:19:09,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:19:10,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:19:10,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:19:10,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:19:10,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:19:10,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:19:10,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:19:10,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:19:10,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:19:10,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (1/1) ... [2021-11-07 12:19:10,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:19:10,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:19:10,331 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 12:19:10,339 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 12:19:10,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:19:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:19:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:19:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:19:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:19:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:19:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:19:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:19:10,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:19:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:19:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:19:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:19:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:19:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:19:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:19:15,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:19:15,100 INFO L299 CfgBuilder]: Removed 735 assume(true) statements. [2021-11-07 12:19:15,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:19:15 BoogieIcfgContainer [2021-11-07 12:19:15,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:19:15,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:19:15,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:19:15,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:19:15,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:19:09" (1/3) ... [2021-11-07 12:19:15,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e37875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:19:15, skipping insertion in model container [2021-11-07 12:19:15,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:19:09" (2/3) ... [2021-11-07 12:19:15,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e37875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:19:15, skipping insertion in model container [2021-11-07 12:19:15,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:19:15" (3/3) ... [2021-11-07 12:19:15,110 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2021-11-07 12:19:15,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:19:15,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 12:19:15,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:19:15,150 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 12:19:15,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 12:19:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 680 states have (on average 1.3647058823529412) internal successors, (928), 694 states have internal predecessors, (928), 0 states have call successors, (0), 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 12:19:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 12:19:15,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:15,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:15,177 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1913994957, now seen corresponding path program 1 times [2021-11-07 12:19:15,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:15,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353425947] [2021-11-07 12:19:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:15,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:15,557 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 12:19:15,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:15,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353425947] [2021-11-07 12:19:15,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353425947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:15,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:15,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:15,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248461666] [2021-11-07 12:19:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:15,610 INFO L87 Difference]: Start difference. First operand has 695 states, 680 states have (on average 1.3647058823529412) internal successors, (928), 694 states have internal predecessors, (928), 0 states have call successors, (0), 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 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12:19:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:15,772 INFO L93 Difference]: Finished difference Result 1567 states and 2101 transitions. [2021-11-07 12:19:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-07 12:19:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:15,787 INFO L225 Difference]: With dead ends: 1567 [2021-11-07 12:19:15,787 INFO L226 Difference]: Without dead ends: 867 [2021-11-07 12:19:15,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:15,794 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 247 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.52ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:15,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 1760 Invalid, 30 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 100.52ms Time] [2021-11-07 12:19:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-07 12:19:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 821. [2021-11-07 12:19:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 807 states have (on average 1.3407682775712515) internal successors, (1082), 820 states have internal predecessors, (1082), 0 states have call successors, (0), 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 12:19:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1082 transitions. [2021-11-07 12:19:15,879 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1082 transitions. Word has length 12 [2021-11-07 12:19:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:15,879 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1082 transitions. [2021-11-07 12:19:15,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12:19:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1082 transitions. [2021-11-07 12:19:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 12:19:15,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:15,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:15,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:19:15,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 26844020, now seen corresponding path program 1 times [2021-11-07 12:19:15,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:15,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593892200] [2021-11-07 12:19:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:15,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:15,996 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 12:19:15,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:15,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593892200] [2021-11-07 12:19:15,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593892200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:15,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:15,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:15,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749657893] [2021-11-07 12:19:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:15,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:16,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:16,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:16,001 INFO L87 Difference]: Start difference. First operand 821 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:19:17,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:17,594 INFO L93 Difference]: Finished difference Result 2388 states and 3159 transitions. [2021-11-07 12:19:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:17,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-07 12:19:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:17,600 INFO L225 Difference]: With dead ends: 2388 [2021-11-07 12:19:17,600 INFO L226 Difference]: Without dead ends: 1570 [2021-11-07 12:19:17,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:17,604 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 865 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1476.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1554.95ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:17,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1762 Invalid, 16 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1554.95ms Time] [2021-11-07 12:19:17,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-11-07 12:19:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1552. [2021-11-07 12:19:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1538 states have (on average 1.3426527958387515) internal successors, (2065), 1551 states have internal predecessors, (2065), 0 states have call successors, (0), 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 12:19:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2065 transitions. [2021-11-07 12:19:17,652 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2065 transitions. Word has length 19 [2021-11-07 12:19:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:17,652 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2065 transitions. [2021-11-07 12:19:17,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:19:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2065 transitions. [2021-11-07 12:19:17,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:19:17,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:17,659 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] [2021-11-07 12:19:17,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:19:17,661 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:17,661 INFO L85 PathProgramCache]: Analyzing trace with hash 845521381, now seen corresponding path program 1 times [2021-11-07 12:19:17,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:17,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079591896] [2021-11-07 12:19:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:17,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:17,753 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 12:19:17,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:17,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079591896] [2021-11-07 12:19:17,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079591896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:17,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:17,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:17,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865123694] [2021-11-07 12:19:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:17,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:17,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:17,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:17,759 INFO L87 Difference]: Start difference. First operand 1552 states and 2065 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 12:19:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:17,813 INFO L93 Difference]: Finished difference Result 1582 states and 2093 transitions. [2021-11-07 12:19:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:17,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-07 12:19:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:17,819 INFO L225 Difference]: With dead ends: 1582 [2021-11-07 12:19:17,819 INFO L226 Difference]: Without dead ends: 1567 [2021-11-07 12:19:17,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:17,820 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 896 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:17,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 928 Invalid, 6 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 27.83ms Time] [2021-11-07 12:19:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2021-11-07 12:19:17,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1552. [2021-11-07 12:19:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1538 states have (on average 1.3413524057217165) internal successors, (2063), 1551 states have internal predecessors, (2063), 0 states have call successors, (0), 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 12:19:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2063 transitions. [2021-11-07 12:19:17,854 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2063 transitions. Word has length 23 [2021-11-07 12:19:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:17,855 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2063 transitions. [2021-11-07 12:19:17,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 12:19:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2063 transitions. [2021-11-07 12:19:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:19:17,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:17,856 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] [2021-11-07 12:19:17,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:19:17,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash 845580963, now seen corresponding path program 1 times [2021-11-07 12:19:17,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:17,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998376948] [2021-11-07 12:19:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:17,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:17,921 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 12:19:17,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:17,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998376948] [2021-11-07 12:19:17,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998376948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:17,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:17,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:17,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896615992] [2021-11-07 12:19:17,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:17,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:17,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:17,923 INFO L87 Difference]: Start difference. First operand 1552 states and 2063 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 12:19:19,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:19,319 INFO L93 Difference]: Finished difference Result 1552 states and 2063 transitions. [2021-11-07 12:19:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:19,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-07 12:19:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:19,324 INFO L225 Difference]: With dead ends: 1552 [2021-11-07 12:19:19,324 INFO L226 Difference]: Without dead ends: 1550 [2021-11-07 12:19:19,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:19,325 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 878 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1268.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1370.10ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:19,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 898 Invalid, 2 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1370.10ms Time] [2021-11-07 12:19:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-11-07 12:19:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1550. [2021-11-07 12:19:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1537 states have (on average 1.3409238776837995) internal successors, (2061), 1549 states have internal predecessors, (2061), 0 states have call successors, (0), 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 12:19:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2061 transitions. [2021-11-07 12:19:19,391 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2061 transitions. Word has length 23 [2021-11-07 12:19:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:19,392 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 2061 transitions. [2021-11-07 12:19:19,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 12:19:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2061 transitions. [2021-11-07 12:19:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 12:19:19,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:19,393 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] [2021-11-07 12:19:19,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:19:19,394 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash 443206545, now seen corresponding path program 1 times [2021-11-07 12:19:19,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:19,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879547300] [2021-11-07 12:19:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:19,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:19,469 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 12:19:19,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:19,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879547300] [2021-11-07 12:19:19,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879547300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:19,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:19,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:19,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596597717] [2021-11-07 12:19:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:19,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:19,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:19,472 INFO L87 Difference]: Start difference. First operand 1550 states and 2061 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 12:19:21,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:21,386 INFO L93 Difference]: Finished difference Result 1550 states and 2061 transitions. [2021-11-07 12:19:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:21,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-07 12:19:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:21,391 INFO L225 Difference]: With dead ends: 1550 [2021-11-07 12:19:21,392 INFO L226 Difference]: Without dead ends: 1548 [2021-11-07 12:19:21,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:21,393 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 875 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1785.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1887.78ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:21,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 896 Invalid, 2 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1887.78ms Time] [2021-11-07 12:19:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-11-07 12:19:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2021-11-07 12:19:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1536 states have (on average 1.3404947916666667) internal successors, (2059), 1547 states have internal predecessors, (2059), 0 states have call successors, (0), 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 12:19:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2059 transitions. [2021-11-07 12:19:21,430 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2059 transitions. Word has length 24 [2021-11-07 12:19:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:21,430 INFO L470 AbstractCegarLoop]: Abstraction has 1548 states and 2059 transitions. [2021-11-07 12:19:21,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 12:19:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2059 transitions. [2021-11-07 12:19:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 12:19:21,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:21,431 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] [2021-11-07 12:19:21,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:19:21,432 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash 854501485, now seen corresponding path program 1 times [2021-11-07 12:19:21,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:21,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608314760] [2021-11-07 12:19:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:21,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:21,519 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 12:19:21,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:21,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608314760] [2021-11-07 12:19:21,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608314760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:21,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:21,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:21,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031572232] [2021-11-07 12:19:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:21,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:21,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:21,521 INFO L87 Difference]: Start difference. First operand 1548 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 12:19:22,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:22,737 INFO L93 Difference]: Finished difference Result 1548 states and 2059 transitions. [2021-11-07 12:19:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:22,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-07 12:19:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:22,742 INFO L225 Difference]: With dead ends: 1548 [2021-11-07 12:19:22,742 INFO L226 Difference]: Without dead ends: 1546 [2021-11-07 12:19:22,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:22,743 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 872 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1098.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1186.10ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:22,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 894 Invalid, 2 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1186.10ms Time] [2021-11-07 12:19:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-11-07 12:19:22,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1546. [2021-11-07 12:19:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1535 states have (on average 1.3400651465798046) internal successors, (2057), 1545 states have internal predecessors, (2057), 0 states have call successors, (0), 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 12:19:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2057 transitions. [2021-11-07 12:19:22,783 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2057 transitions. Word has length 25 [2021-11-07 12:19:22,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:22,783 INFO L470 AbstractCegarLoop]: Abstraction has 1546 states and 2057 transitions. [2021-11-07 12:19:22,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 12:19:22,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2057 transitions. [2021-11-07 12:19:22,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 12:19:22,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:22,784 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 12:19:22,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:19:22,785 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash 719742747, now seen corresponding path program 1 times [2021-11-07 12:19:22,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:22,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116802239] [2021-11-07 12:19:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:22,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:22,874 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 12:19:22,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:22,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116802239] [2021-11-07 12:19:22,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116802239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:22,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:22,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:22,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146046830] [2021-11-07 12:19:22,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:22,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:22,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:22,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:22,881 INFO L87 Difference]: Start difference. First operand 1546 states and 2057 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 12:19:24,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:25,101 INFO L93 Difference]: Finished difference Result 4543 states and 6069 transitions. [2021-11-07 12:19:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:25,102 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 12:19:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:25,111 INFO L225 Difference]: With dead ends: 4543 [2021-11-07 12:19:25,111 INFO L226 Difference]: Without dead ends: 3000 [2021-11-07 12:19:25,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:25,114 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 837 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2050.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2155.95ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:25,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1767 Invalid, 27 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2155.95ms Time] [2021-11-07 12:19:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-11-07 12:19:25,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2984. [2021-11-07 12:19:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2973 states have (on average 1.3427514295324587) internal successors, (3992), 2983 states have internal predecessors, (3992), 0 states have call successors, (0), 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 12:19:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3992 transitions. [2021-11-07 12:19:25,186 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3992 transitions. Word has length 26 [2021-11-07 12:19:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:25,187 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 3992 transitions. [2021-11-07 12:19:25,188 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 12:19:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3992 transitions. [2021-11-07 12:19:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 12:19:25,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:25,189 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] [2021-11-07 12:19:25,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:19:25,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash 837189175, now seen corresponding path program 1 times [2021-11-07 12:19:25,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:25,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044243245] [2021-11-07 12:19:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:25,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:25,259 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 12:19:25,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:25,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044243245] [2021-11-07 12:19:25,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044243245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:25,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:25,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:25,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620210531] [2021-11-07 12:19:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:25,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:25,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:25,261 INFO L87 Difference]: Start difference. First operand 2984 states and 3992 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 12:19:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:26,231 INFO L93 Difference]: Finished difference Result 2984 states and 3992 transitions. [2021-11-07 12:19:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-07 12:19:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:26,240 INFO L225 Difference]: With dead ends: 2984 [2021-11-07 12:19:26,240 INFO L226 Difference]: Without dead ends: 2967 [2021-11-07 12:19:26,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:26,242 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 819 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 846.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 924.75ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:26,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 927 Invalid, 13 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 924.75ms Time] [2021-11-07 12:19:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-11-07 12:19:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2967. [2021-11-07 12:19:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2958 states have (on average 1.341108857336038) internal successors, (3967), 2966 states have internal predecessors, (3967), 0 states have call successors, (0), 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 12:19:26,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3967 transitions. [2021-11-07 12:19:26,325 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3967 transitions. Word has length 27 [2021-11-07 12:19:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:26,325 INFO L470 AbstractCegarLoop]: Abstraction has 2967 states and 3967 transitions. [2021-11-07 12:19:26,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 12:19:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3967 transitions. [2021-11-07 12:19:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 12:19:26,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:26,328 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, 1, 1, 1, 1, 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 12:19:26,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:19:26,329 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:26,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1988061701, now seen corresponding path program 1 times [2021-11-07 12:19:26,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:26,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277128834] [2021-11-07 12:19:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:26,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:26,412 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 12:19:26,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:26,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277128834] [2021-11-07 12:19:26,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277128834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:26,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:26,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:26,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378865748] [2021-11-07 12:19:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:26,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:26,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:26,418 INFO L87 Difference]: Start difference. First operand 2967 states and 3967 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:19:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:26,560 INFO L93 Difference]: Finished difference Result 7975 states and 10731 transitions. [2021-11-07 12:19:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:26,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 12:19:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:26,576 INFO L225 Difference]: With dead ends: 7975 [2021-11-07 12:19:26,577 INFO L226 Difference]: Without dead ends: 5011 [2021-11-07 12:19:26,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:26,584 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 703 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.47ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:26,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 2403 Invalid, 20 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 43.47ms Time] [2021-11-07 12:19:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2021-11-07 12:19:26,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 4973. [2021-11-07 12:19:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4973 states, 4964 states have (on average 1.355157131345689) internal successors, (6727), 4972 states have internal predecessors, (6727), 0 states have call successors, (0), 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 12:19:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4973 states to 4973 states and 6727 transitions. [2021-11-07 12:19:26,755 INFO L78 Accepts]: Start accepts. Automaton has 4973 states and 6727 transitions. Word has length 78 [2021-11-07 12:19:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:26,755 INFO L470 AbstractCegarLoop]: Abstraction has 4973 states and 6727 transitions. [2021-11-07 12:19:26,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:19:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4973 states and 6727 transitions. [2021-11-07 12:19:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 12:19:26,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:26,758 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:26,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:19:26,758 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1064888383, now seen corresponding path program 1 times [2021-11-07 12:19:26,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:26,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38867702] [2021-11-07 12:19:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:26,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:19:26,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:26,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38867702] [2021-11-07 12:19:26,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38867702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:26,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:26,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:19:26,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403251342] [2021-11-07 12:19:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:26,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:19:26,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:19:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:19:26,880 INFO L87 Difference]: Start difference. First operand 4973 states and 6727 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 12:19:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:27,185 INFO L93 Difference]: Finished difference Result 19387 states and 26275 transitions. [2021-11-07 12:19:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:19:27,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 96 [2021-11-07 12:19:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:27,231 INFO L225 Difference]: With dead ends: 19387 [2021-11-07 12:19:27,231 INFO L226 Difference]: Without dead ends: 14417 [2021-11-07 12:19:27,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:27,244 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 2325 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.19ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:27,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2325 Valid, 3456 Invalid, 11 Unknown, 0 Unchecked, 5.34ms Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 31.19ms Time] [2021-11-07 12:19:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14417 states. [2021-11-07 12:19:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14417 to 4981. [2021-11-07 12:19:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4981 states, 4972 states have (on average 1.3545856798069187) internal successors, (6735), 4980 states have internal predecessors, (6735), 0 states have call successors, (0), 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 12:19:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4981 states to 4981 states and 6735 transitions. [2021-11-07 12:19:27,500 INFO L78 Accepts]: Start accepts. Automaton has 4981 states and 6735 transitions. Word has length 96 [2021-11-07 12:19:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:27,501 INFO L470 AbstractCegarLoop]: Abstraction has 4981 states and 6735 transitions. [2021-11-07 12:19:27,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 12:19:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4981 states and 6735 transitions. [2021-11-07 12:19:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 12:19:27,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:27,503 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:27,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:19:27,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:27,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1487590209, now seen corresponding path program 1 times [2021-11-07 12:19:27,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:27,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842337611] [2021-11-07 12:19:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:27,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:19:27,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:27,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842337611] [2021-11-07 12:19:27,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842337611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:27,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:27,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:27,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428928318] [2021-11-07 12:19:27,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:27,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:27,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:27,638 INFO L87 Difference]: Start difference. First operand 4981 states and 6735 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 12:19:29,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:29,620 INFO L93 Difference]: Finished difference Result 10795 states and 14679 transitions. [2021-11-07 12:19:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:29,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 96 [2021-11-07 12:19:29,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:29,631 INFO L225 Difference]: With dead ends: 10795 [2021-11-07 12:19:29,631 INFO L226 Difference]: Without dead ends: 5817 [2021-11-07 12:19:29,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:29,638 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 316 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1704.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1803.85ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:29,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1864 Invalid, 44 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1803.85ms Time] [2021-11-07 12:19:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5817 states. [2021-11-07 12:19:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5817 to 5711. [2021-11-07 12:19:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5702 states have (on average 1.362504384426517) internal successors, (7769), 5710 states have internal predecessors, (7769), 0 states have call successors, (0), 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 12:19:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 7769 transitions. [2021-11-07 12:19:29,818 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 7769 transitions. Word has length 96 [2021-11-07 12:19:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:29,819 INFO L470 AbstractCegarLoop]: Abstraction has 5711 states and 7769 transitions. [2021-11-07 12:19:29,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 12:19:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 7769 transitions. [2021-11-07 12:19:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 12:19:29,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:29,823 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:29,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:19:29,823 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash -227700886, now seen corresponding path program 1 times [2021-11-07 12:19:29,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:29,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92162599] [2021-11-07 12:19:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:29,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 12:19:29,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:29,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92162599] [2021-11-07 12:19:29,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92162599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:29,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:29,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:29,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295633626] [2021-11-07 12:19:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:29,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:29,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:29,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:29,943 INFO L87 Difference]: Start difference. First operand 5711 states and 7769 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 12:19:31,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:32,142 INFO L93 Difference]: Finished difference Result 5711 states and 7769 transitions. [2021-11-07 12:19:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 101 [2021-11-07 12:19:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:32,152 INFO L225 Difference]: With dead ends: 5711 [2021-11-07 12:19:32,153 INFO L226 Difference]: Without dead ends: 5705 [2021-11-07 12:19:32,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:32,155 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 27 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2024.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2097.38ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:32,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1721 Invalid, 11 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2097.38ms Time] [2021-11-07 12:19:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2021-11-07 12:19:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 5705. [2021-11-07 12:19:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5699 states have (on average 1.3598876995964204) internal successors, (7750), 5704 states have internal predecessors, (7750), 0 states have call successors, (0), 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 12:19:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7750 transitions. [2021-11-07 12:19:32,316 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7750 transitions. Word has length 101 [2021-11-07 12:19:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:32,316 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 7750 transitions. [2021-11-07 12:19:32,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 12:19:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7750 transitions. [2021-11-07 12:19:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 12:19:32,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:32,318 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:32,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:19:32,319 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1531760360, now seen corresponding path program 1 times [2021-11-07 12:19:32,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:32,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304654384] [2021-11-07 12:19:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:32,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 12:19:32,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:32,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304654384] [2021-11-07 12:19:32,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304654384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:32,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:32,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:32,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896618759] [2021-11-07 12:19:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:32,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:32,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:32,406 INFO L87 Difference]: Start difference. First operand 5705 states and 7750 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:19:34,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:34,669 INFO L93 Difference]: Finished difference Result 11405 states and 15496 transitions. [2021-11-07 12:19:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:34,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:19:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:34,677 INFO L225 Difference]: With dead ends: 11405 [2021-11-07 12:19:34,677 INFO L226 Difference]: Without dead ends: 5703 [2021-11-07 12:19:34,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:34,684 INFO L933 BasicCegarLoop]: 1173 mSDtfsCounter, 847 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2028.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2110.89ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:34,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 2003 Invalid, 20 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2110.89ms Time] [2021-11-07 12:19:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2021-11-07 12:19:34,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5676. [2021-11-07 12:19:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5671 states have (on average 1.3581378945512255) internal successors, (7702), 5675 states have internal predecessors, (7702), 0 states have call successors, (0), 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 12:19:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 7702 transitions. [2021-11-07 12:19:34,816 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 7702 transitions. Word has length 102 [2021-11-07 12:19:34,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:34,816 INFO L470 AbstractCegarLoop]: Abstraction has 5676 states and 7702 transitions. [2021-11-07 12:19:34,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:19:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 7702 transitions. [2021-11-07 12:19:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 12:19:34,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:34,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:34,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 12:19:34,819 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash -988199574, now seen corresponding path program 1 times [2021-11-07 12:19:34,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:34,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310935928] [2021-11-07 12:19:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:34,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 12:19:34,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:34,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310935928] [2021-11-07 12:19:34,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310935928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:34,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:19:34,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494700480] [2021-11-07 12:19:34,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:34,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:19:34,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:19:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:34,966 INFO L87 Difference]: Start difference. First operand 5676 states and 7702 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:19:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:35,212 INFO L93 Difference]: Finished difference Result 8473 states and 11503 transitions. [2021-11-07 12:19:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:19:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:19:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:35,229 INFO L225 Difference]: With dead ends: 8473 [2021-11-07 12:19:35,229 INFO L226 Difference]: Without dead ends: 8461 [2021-11-07 12:19:35,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.50ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:19:35,233 INFO L933 BasicCegarLoop]: 1676 mSDtfsCounter, 2465 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.49ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:35,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2465 Valid, 4306 Invalid, 17 Unknown, 0 Unchecked, 4.79ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 18.49ms Time] [2021-11-07 12:19:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8461 states. [2021-11-07 12:19:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8461 to 5664. [2021-11-07 12:19:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5661 states have (on average 1.3577106518282989) internal successors, (7686), 5663 states have internal predecessors, (7686), 0 states have call successors, (0), 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 12:19:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 7686 transitions. [2021-11-07 12:19:35,449 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 7686 transitions. Word has length 102 [2021-11-07 12:19:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:35,449 INFO L470 AbstractCegarLoop]: Abstraction has 5664 states and 7686 transitions. [2021-11-07 12:19:35,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:19:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 7686 transitions. [2021-11-07 12:19:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 12:19:35,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:35,452 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:35,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 12:19:35,452 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -961310274, now seen corresponding path program 1 times [2021-11-07 12:19:35,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:35,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801205809] [2021-11-07 12:19:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:35,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 12:19:35,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:35,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801205809] [2021-11-07 12:19:35,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801205809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:35,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:19:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473097482] [2021-11-07 12:19:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:35,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:19:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:19:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:19:35,543 INFO L87 Difference]: Start difference. First operand 5664 states and 7686 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 12:19:37,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:37,329 INFO L93 Difference]: Finished difference Result 10573 states and 14258 transitions. [2021-11-07 12:19:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:19:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 114 [2021-11-07 12:19:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:37,349 INFO L225 Difference]: With dead ends: 10573 [2021-11-07 12:19:37,349 INFO L226 Difference]: Without dead ends: 4912 [2021-11-07 12:19:37,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:37,355 INFO L933 BasicCegarLoop]: 1207 mSDtfsCounter, 660 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1482.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1578.22ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:37,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 2955 Invalid, 16 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 1578.22ms Time] [2021-11-07 12:19:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2021-11-07 12:19:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 3856. [2021-11-07 12:19:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3854 states have (on average 1.3463933575505969) internal successors, (5189), 3855 states have internal predecessors, (5189), 0 states have call successors, (0), 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 12:19:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5189 transitions. [2021-11-07 12:19:37,475 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5189 transitions. Word has length 114 [2021-11-07 12:19:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:37,476 INFO L470 AbstractCegarLoop]: Abstraction has 3856 states and 5189 transitions. [2021-11-07 12:19:37,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 12:19:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5189 transitions. [2021-11-07 12:19:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 12:19:37,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:37,479 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:37,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 12:19:37,479 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1980898253, now seen corresponding path program 1 times [2021-11-07 12:19:37,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:37,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80422014] [2021-11-07 12:19:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:37,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:19:37,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:37,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80422014] [2021-11-07 12:19:37,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80422014] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:19:37,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289920551] [2021-11-07 12:19:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:37,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:19:37,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:19:37,641 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 12:19:37,644 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 12:19:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:19:38,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:19:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:19:38,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:19:38,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289920551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:38,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:19:38,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 12:19:38,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56161522] [2021-11-07 12:19:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:38,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:19:38,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:19:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:38,443 INFO L87 Difference]: Start difference. First operand 3856 states and 5189 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 12:19:40,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:19:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:40,881 INFO L93 Difference]: Finished difference Result 9659 states and 12962 transitions. [2021-11-07 12:19:40,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:19:40,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 124 [2021-11-07 12:19:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:40,898 INFO L225 Difference]: With dead ends: 9659 [2021-11-07 12:19:40,899 INFO L226 Difference]: Without dead ends: 9645 [2021-11-07 12:19:40,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:40,904 INFO L933 BasicCegarLoop]: 1115 mSDtfsCounter, 1131 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2042.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2136.43ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:40,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 2840 Invalid, 35 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2136.43ms Time] [2021-11-07 12:19:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2021-11-07 12:19:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 9429. [2021-11-07 12:19:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9429 states, 9427 states have (on average 1.3493157950567518) internal successors, (12720), 9428 states have internal predecessors, (12720), 0 states have call successors, (0), 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 12:19:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9429 states to 9429 states and 12720 transitions. [2021-11-07 12:19:41,240 INFO L78 Accepts]: Start accepts. Automaton has 9429 states and 12720 transitions. Word has length 124 [2021-11-07 12:19:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:41,241 INFO L470 AbstractCegarLoop]: Abstraction has 9429 states and 12720 transitions. [2021-11-07 12:19:41,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 12:19:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9429 states and 12720 transitions. [2021-11-07 12:19:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 12:19:41,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:41,247 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:41,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 12:19:41,451 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,SelfDestructingSolverStorable15 [2021-11-07 12:19:41,453 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1808665436, now seen corresponding path program 1 times [2021-11-07 12:19:41,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:41,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507256858] [2021-11-07 12:19:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:41,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:19:41,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:41,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507256858] [2021-11-07 12:19:41,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507256858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:41,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:41,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:19:41,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064318913] [2021-11-07 12:19:41,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:41,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:19:41,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:41,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:19:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:41,646 INFO L87 Difference]: Start difference. First operand 9429 states and 12720 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 12:19:42,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:42,305 INFO L93 Difference]: Finished difference Result 28281 states and 38154 transitions. [2021-11-07 12:19:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:19:42,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 124 [2021-11-07 12:19:42,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:42,336 INFO L225 Difference]: With dead ends: 28281 [2021-11-07 12:19:42,336 INFO L226 Difference]: Without dead ends: 18855 [2021-11-07 12:19:42,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:19:42,352 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 870 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.53ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:42,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1903 Invalid, 9 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 11.53ms Time] [2021-11-07 12:19:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18855 states. [2021-11-07 12:19:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18855 to 9457. [2021-11-07 12:19:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9457 states, 9455 states have (on average 1.348281332628239) internal successors, (12748), 9456 states have internal predecessors, (12748), 0 states have call successors, (0), 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 12:19:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9457 states to 9457 states and 12748 transitions. [2021-11-07 12:19:42,749 INFO L78 Accepts]: Start accepts. Automaton has 9457 states and 12748 transitions. Word has length 124 [2021-11-07 12:19:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:42,750 INFO L470 AbstractCegarLoop]: Abstraction has 9457 states and 12748 transitions. [2021-11-07 12:19:42,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 12:19:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9457 states and 12748 transitions. [2021-11-07 12:19:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 12:19:42,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:42,756 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:42,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:19:42,756 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash -695623963, now seen corresponding path program 1 times [2021-11-07 12:19:42,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:42,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122069840] [2021-11-07 12:19:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:42,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:19:42,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:42,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122069840] [2021-11-07 12:19:42,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122069840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:42,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:42,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:19:42,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361974895] [2021-11-07 12:19:42,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:42,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:19:42,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:19:42,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:19:42,925 INFO L87 Difference]: Start difference. First operand 9457 states and 12748 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 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 12:19:45,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:45,094 INFO L93 Difference]: Finished difference Result 58701 states and 79994 transitions. [2021-11-07 12:19:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:19:45,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 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 126 [2021-11-07 12:19:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:45,186 INFO L225 Difference]: With dead ends: 58701 [2021-11-07 12:19:45,186 INFO L226 Difference]: Without dead ends: 49247 [2021-11-07 12:19:45,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 88.24ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:19:45,209 INFO L933 BasicCegarLoop]: 1695 mSDtfsCounter, 11749 mSDsluCounter, 5994 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11749 SdHoareTripleChecker+Valid, 7689 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 104.30ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.45ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:45,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11749 Valid, 7689 Invalid, 148 Unknown, 0 Unchecked, 104.30ms Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 139.45ms Time] [2021-11-07 12:19:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49247 states. [2021-11-07 12:19:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49247 to 9597. [2021-11-07 12:19:46,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9597 states, 9595 states have (on average 1.3431995831162065) internal successors, (12888), 9596 states have internal predecessors, (12888), 0 states have call successors, (0), 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 12:19:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9597 states to 9597 states and 12888 transitions. [2021-11-07 12:19:46,116 INFO L78 Accepts]: Start accepts. Automaton has 9597 states and 12888 transitions. Word has length 126 [2021-11-07 12:19:46,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:46,118 INFO L470 AbstractCegarLoop]: Abstraction has 9597 states and 12888 transitions. [2021-11-07 12:19:46,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 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 12:19:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9597 states and 12888 transitions. [2021-11-07 12:19:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 12:19:46,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:46,124 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:46,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 12:19:46,125 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:46,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash 353842358, now seen corresponding path program 1 times [2021-11-07 12:19:46,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:46,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351642473] [2021-11-07 12:19:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:46,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:19:46,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:46,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351642473] [2021-11-07 12:19:46,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351642473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:46,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:46,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:19:46,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132800788] [2021-11-07 12:19:46,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:46,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:19:46,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:19:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:46,284 INFO L87 Difference]: Start difference. First operand 9597 states and 12888 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 12:19:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:48,202 INFO L93 Difference]: Finished difference Result 44061 states and 59720 transitions. [2021-11-07 12:19:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:19:48,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 129 [2021-11-07 12:19:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:48,256 INFO L225 Difference]: With dead ends: 44061 [2021-11-07 12:19:48,257 INFO L226 Difference]: Without dead ends: 34467 [2021-11-07 12:19:48,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.86ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:19:48,274 INFO L933 BasicCegarLoop]: 1078 mSDtfsCounter, 3081 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.87ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.45ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:48,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3081 Valid, 5304 Invalid, 116 Unknown, 0 Unchecked, 7.87ms Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 115.45ms Time] [2021-11-07 12:19:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34467 states. [2021-11-07 12:19:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34467 to 9681. [2021-11-07 12:19:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9681 states, 9679 states have (on average 1.3402210972207873) internal successors, (12972), 9680 states have internal predecessors, (12972), 0 states have call successors, (0), 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 12:19:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9681 states to 9681 states and 12972 transitions. [2021-11-07 12:19:49,123 INFO L78 Accepts]: Start accepts. Automaton has 9681 states and 12972 transitions. Word has length 129 [2021-11-07 12:19:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:49,124 INFO L470 AbstractCegarLoop]: Abstraction has 9681 states and 12972 transitions. [2021-11-07 12:19:49,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 12:19:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 9681 states and 12972 transitions. [2021-11-07 12:19:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 12:19:49,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:49,130 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:49,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 12:19:49,130 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash -349718692, now seen corresponding path program 1 times [2021-11-07 12:19:49,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:49,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048138495] [2021-11-07 12:19:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:49,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:19:49,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:49,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048138495] [2021-11-07 12:19:49,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048138495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:49,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:49,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:19:49,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125033581] [2021-11-07 12:19:49,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:49,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:19:49,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:19:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:49,289 INFO L87 Difference]: Start difference. First operand 9681 states and 12972 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 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 12:19:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:51,489 INFO L93 Difference]: Finished difference Result 44145 states and 59776 transitions. [2021-11-07 12:19:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:19:51,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 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 132 [2021-11-07 12:19:51,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:51,545 INFO L225 Difference]: With dead ends: 44145 [2021-11-07 12:19:51,546 INFO L226 Difference]: Without dead ends: 34467 [2021-11-07 12:19:51,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.68ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:19:51,562 INFO L933 BasicCegarLoop]: 1078 mSDtfsCounter, 3081 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.20ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:51,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3081 Valid, 5304 Invalid, 116 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 105.20ms Time] [2021-11-07 12:19:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34467 states. [2021-11-07 12:19:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34467 to 9765. [2021-11-07 12:19:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9765 states, 9763 states have (on average 1.337293864590802) internal successors, (13056), 9764 states have internal predecessors, (13056), 0 states have call successors, (0), 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 12:19:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 13056 transitions. [2021-11-07 12:19:52,416 INFO L78 Accepts]: Start accepts. Automaton has 9765 states and 13056 transitions. Word has length 132 [2021-11-07 12:19:52,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:52,417 INFO L470 AbstractCegarLoop]: Abstraction has 9765 states and 13056 transitions. [2021-11-07 12:19:52,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 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 12:19:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 9765 states and 13056 transitions. [2021-11-07 12:19:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 12:19:52,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:52,422 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:52,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 12:19:52,423 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash 655612877, now seen corresponding path program 1 times [2021-11-07 12:19:52,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:52,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119489120] [2021-11-07 12:19:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:52,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:19:52,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:52,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119489120] [2021-11-07 12:19:52,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119489120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:52,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:52,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:19:52,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529102459] [2021-11-07 12:19:52,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:52,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:19:52,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:52,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:19:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:19:52,537 INFO L87 Difference]: Start difference. First operand 9765 states and 13056 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 12:19:54,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:19:54,999 INFO L93 Difference]: Finished difference Result 43961 states and 59532 transitions. [2021-11-07 12:19:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:19:55,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 135 [2021-11-07 12:19:55,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:19:55,061 INFO L225 Difference]: With dead ends: 43961 [2021-11-07 12:19:55,061 INFO L226 Difference]: Without dead ends: 34199 [2021-11-07 12:19:55,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.57ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:19:55,083 INFO L933 BasicCegarLoop]: 2333 mSDtfsCounter, 2399 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 7815 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.53ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.65ms IncrementalHoareTripleChecker+Time [2021-11-07 12:19:55,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2399 Valid, 7815 Invalid, 116 Unknown, 0 Unchecked, 9.53ms Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 94.65ms Time] [2021-11-07 12:19:55,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34199 states. [2021-11-07 12:19:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34199 to 9849. [2021-11-07 12:19:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9849 states, 9847 states have (on average 1.3344165735757083) internal successors, (13140), 9848 states have internal predecessors, (13140), 0 states have call successors, (0), 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 12:19:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9849 states to 9849 states and 13140 transitions. [2021-11-07 12:19:56,117 INFO L78 Accepts]: Start accepts. Automaton has 9849 states and 13140 transitions. Word has length 135 [2021-11-07 12:19:56,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:19:56,117 INFO L470 AbstractCegarLoop]: Abstraction has 9849 states and 13140 transitions. [2021-11-07 12:19:56,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 12:19:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9849 states and 13140 transitions. [2021-11-07 12:19:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 12:19:56,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:19:56,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:19:56,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 12:19:56,123 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:19:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:19:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 560007699, now seen corresponding path program 1 times [2021-11-07 12:19:56,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:19:56,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855043724] [2021-11-07 12:19:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:19:56,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:19:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:19:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 12:19:56,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:19:56,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855043724] [2021-11-07 12:19:56,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855043724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:19:56,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:19:56,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:19:56,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059508053] [2021-11-07 12:19:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:19:56,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:19:56,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:19:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:19:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:19:56,298 INFO L87 Difference]: Start difference. First operand 9849 states and 13140 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 12:20:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:20:03,152 INFO L93 Difference]: Finished difference Result 87797 states and 118977 transitions. [2021-11-07 12:20:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 12:20:03,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 138 [2021-11-07 12:20:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:20:03,300 INFO L225 Difference]: With dead ends: 87797 [2021-11-07 12:20:03,300 INFO L226 Difference]: Without dead ends: 77951 [2021-11-07 12:20:03,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 173.53ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-11-07 12:20:03,332 INFO L933 BasicCegarLoop]: 2761 mSDtfsCounter, 6687 mSDsluCounter, 11723 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1248.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 14484 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.93ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1402.72ms IncrementalHoareTripleChecker+Time [2021-11-07 12:20:03,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6687 Valid, 14484 Invalid, 568 Unknown, 0 Unchecked, 22.93ms Time], IncrementalHoareTripleChecker [17 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1402.72ms Time] [2021-11-07 12:20:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77951 states. [2021-11-07 12:20:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77951 to 9989. [2021-11-07 12:20:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9989 states, 9987 states have (on average 1.3297286472414138) internal successors, (13280), 9988 states have internal predecessors, (13280), 0 states have call successors, (0), 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 12:20:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9989 states to 9989 states and 13280 transitions. [2021-11-07 12:20:04,622 INFO L78 Accepts]: Start accepts. Automaton has 9989 states and 13280 transitions. Word has length 138 [2021-11-07 12:20:04,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:20:04,623 INFO L470 AbstractCegarLoop]: Abstraction has 9989 states and 13280 transitions. [2021-11-07 12:20:04,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 12:20:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand 9989 states and 13280 transitions. [2021-11-07 12:20:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 12:20:04,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:20:04,628 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:20:04,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 12:20:04,628 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:20:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:20:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash 548795450, now seen corresponding path program 1 times [2021-11-07 12:20:04,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:20:04,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691970439] [2021-11-07 12:20:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:20:04,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:20:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:20:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 12:20:04,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:20:04,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691970439] [2021-11-07 12:20:04,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691970439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:20:04,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:20:04,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:20:04,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292717628] [2021-11-07 12:20:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:20:04,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:20:04,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:20:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:20:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:20:04,884 INFO L87 Difference]: Start difference. First operand 9989 states and 13280 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 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 12:20:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:20:06,458 INFO L93 Difference]: Finished difference Result 15553 states and 20661 transitions. [2021-11-07 12:20:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:20:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 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 140 [2021-11-07 12:20:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:20:06,465 INFO L225 Difference]: With dead ends: 15553 [2021-11-07 12:20:06,466 INFO L226 Difference]: Without dead ends: 5423 [2021-11-07 12:20:06,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.21ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:20:06,473 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 33 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 937.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1009.59ms IncrementalHoareTripleChecker+Time [2021-11-07 12:20:06,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3486 Invalid, 29 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1009.59ms Time] [2021-11-07 12:20:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-11-07 12:20:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4975. [2021-11-07 12:20:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4975 states, 4973 states have (on average 1.3323949326362357) internal successors, (6626), 4974 states have internal predecessors, (6626), 0 states have call successors, (0), 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 12:20:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 6626 transitions. [2021-11-07 12:20:06,912 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 6626 transitions. Word has length 140 [2021-11-07 12:20:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:20:06,912 INFO L470 AbstractCegarLoop]: Abstraction has 4975 states and 6626 transitions. [2021-11-07 12:20:06,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 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 12:20:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 6626 transitions. [2021-11-07 12:20:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 12:20:06,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:20:06,915 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:20:06,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 12:20:06,916 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:20:06,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:20:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash -63759908, now seen corresponding path program 1 times [2021-11-07 12:20:06,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:20:06,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36649601] [2021-11-07 12:20:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:20:06,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:20:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:20:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 12:20:07,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:20:07,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36649601] [2021-11-07 12:20:07,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36649601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:20:07,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:20:07,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 12:20:07,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257855661] [2021-11-07 12:20:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:20:07,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 12:20:07,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:20:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 12:20:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-07 12:20:07,181 INFO L87 Difference]: Start difference. First operand 4975 states and 6626 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 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 12:20:09,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:20:11,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:20:13,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:20:14,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:20:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:20:19,239 INFO L93 Difference]: Finished difference Result 27350 states and 37132 transitions. [2021-11-07 12:20:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 12:20:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 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 141 [2021-11-07 12:20:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:20:19,274 INFO L225 Difference]: With dead ends: 27350 [2021-11-07 12:20:19,274 INFO L226 Difference]: Without dead ends: 22368 [2021-11-07 12:20:19,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1056.08ms TimeCoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 12:20:19,289 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 9043 mSDsluCounter, 10671 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 53 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8360.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9043 SdHoareTripleChecker+Valid, 12325 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.36ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8831.82ms IncrementalHoareTripleChecker+Time [2021-11-07 12:20:19,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9043 Valid, 12325 Invalid, 740 Unknown, 0 Unchecked, 23.36ms Time], IncrementalHoareTripleChecker [53 Valid, 684 Invalid, 3 Unknown, 0 Unchecked, 8831.82ms Time] [2021-11-07 12:20:19,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22368 states. [2021-11-07 12:20:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22368 to 4908. [2021-11-07 12:20:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4906 states have (on average 1.3353037097431717) internal successors, (6551), 4907 states have internal predecessors, (6551), 0 states have call successors, (0), 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 12:20:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 6551 transitions. [2021-11-07 12:20:19,994 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 6551 transitions. Word has length 141 [2021-11-07 12:20:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:20:19,994 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 6551 transitions. [2021-11-07 12:20:19,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 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 12:20:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 6551 transitions. [2021-11-07 12:20:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 12:20:19,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:20:19,997 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:20:19,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 12:20:19,998 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 12:20:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:20:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1759754653, now seen corresponding path program 1 times [2021-11-07 12:20:19,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:20:19,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383761340] [2021-11-07 12:20:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:20:19,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:20:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:20:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 12:20:20,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:20:20,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383761340] [2021-11-07 12:20:20,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383761340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:20:20,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:20:20,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:20:20,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965715197] [2021-11-07 12:20:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:20:20,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:20:20,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:20:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:20:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:20:20,228 INFO L87 Difference]: Start difference. First operand 4908 states and 6551 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 12:20:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:20:20,774 INFO L93 Difference]: Finished difference Result 6245 states and 8326 transitions. [2021-11-07 12:20:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:20:20,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 142 [2021-11-07 12:20:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:20:20,775 INFO L225 Difference]: With dead ends: 6245 [2021-11-07 12:20:20,775 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 12:20:20,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.14ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:20:20,780 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 2492 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.57ms IncrementalHoareTripleChecker+Time [2021-11-07 12:20:20,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2492 Valid, 2034 Invalid, 16 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 17.57ms Time] [2021-11-07 12:20:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 12:20:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 12:20:20,781 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 12:20:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 12:20:20,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2021-11-07 12:20:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:20:20,781 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 12:20:20,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 12:20:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 12:20:20,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 12:20:20,783 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (13 of 14 remaining) [2021-11-07 12:20:20,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (12 of 14 remaining) [2021-11-07 12:20:20,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (11 of 14 remaining) [2021-11-07 12:20:20,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (10 of 14 remaining) [2021-11-07 12:20:20,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (9 of 14 remaining) [2021-11-07 12:20:20,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (8 of 14 remaining) [2021-11-07 12:20:20,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (7 of 14 remaining) [2021-11-07 12:20:20,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (6 of 14 remaining) [2021-11-07 12:20:20,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (5 of 14 remaining) [2021-11-07 12:20:20,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (4 of 14 remaining) [2021-11-07 12:20:20,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (3 of 14 remaining) [2021-11-07 12:20:20,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (2 of 14 remaining) [2021-11-07 12:20:20,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (1 of 14 remaining) [2021-11-07 12:20:20,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (0 of 14 remaining) [2021-11-07 12:20:20,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 12:20:20,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 12:21:33,833 WARN L227 SmtUtils]: Spent 1.22m on a formula simplification that was a NOOP. DAG size: 243 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-07 12:22:58,229 WARN L227 SmtUtils]: Spent 1.41m on a formula simplification that was a NOOP. DAG size: 316 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-07 12:29:45,602 WARN L227 SmtUtils]: Spent 6.79m on a formula simplification that was a NOOP. DAG size: 193 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-07 12:30:55,462 WARN L227 SmtUtils]: Spent 1.16m on a formula simplification that was a NOOP. DAG size: 243 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-07 12:32:05,265 WARN L227 SmtUtils]: Spent 1.16m on a formula simplification that was a NOOP. DAG size: 243 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-07 12:33:15,238 WARN L227 SmtUtils]: Spent 1.17m on a formula simplification that was a NOOP. DAG size: 243 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15