./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d4091e99c6c703f11d6d31e8eaec6c84e6dd277464e5b390742bbd7adf0ea708 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:22:05,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:22:05,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:22:05,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:22:05,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:22:05,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:22:05,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:22:05,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:22:05,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:22:05,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:22:05,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:22:05,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:22:05,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:22:05,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:22:05,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:22:05,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:22:05,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:22:05,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:22:05,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:22:05,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:22:05,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:22:05,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:22:05,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:22:05,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:22:05,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:22:05,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:22:05,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:22:05,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:22:05,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:22:05,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:22:05,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:22:05,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:22:05,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:22:05,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:22:05,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:22:05,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:22:05,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:22:05,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:22:05,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:22:05,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:22:05,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:22:05,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:22:05,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:22:05,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:22:05,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:22:05,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:22:05,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:22:05,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:22:05,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:22:05,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:22:05,903 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:22:05,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:22:05,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:22:05,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:22:05,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:22:05,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:22:05,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:22:05,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:22:05,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:22:05,917 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:22:05,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:22:05,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:22:05,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:22:05,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:22:05,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:22:05,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:22:05,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:22:05,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:22:05,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:22:05,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:22:05,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:22:05,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:22:05,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:22:05,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:22:05,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:22:05,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:22:05,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4091e99c6c703f11d6d31e8eaec6c84e6dd277464e5b390742bbd7adf0ea708 [2021-12-16 01:22:06,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:22:06,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:22:06,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:22:06,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:22:06,343 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:22:06,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-12-16 01:22:06,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5663f965b/cce85fa05a4346f69f5b51ee9750cefa/FLAGe95afef8c [2021-12-16 01:22:06,914 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:22:06,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-12-16 01:22:06,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5663f965b/cce85fa05a4346f69f5b51ee9750cefa/FLAGe95afef8c [2021-12-16 01:22:07,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5663f965b/cce85fa05a4346f69f5b51ee9750cefa [2021-12-16 01:22:07,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:22:07,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:22:07,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:22:07,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:22:07,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:22:07,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82d1292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07, skipping insertion in model container [2021-12-16 01:22:07,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:22:07,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:22:07,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14145,14158] [2021-12-16 01:22:07,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:22:07,712 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:22:07,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14145,14158] [2021-12-16 01:22:07,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:22:07,823 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:22:07,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07 WrapperNode [2021-12-16 01:22:07,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:22:07,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:22:07,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:22:07,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:22:07,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,877 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1157 [2021-12-16 01:22:07,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:22:07,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:22:07,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:22:07,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:22:07,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:22:07,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:22:07,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:22:07,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:22:07,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (1/1) ... [2021-12-16 01:22:07,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:22:07,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:22:07,936 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) [2021-12-16 01:22:07,940 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 [2021-12-16 01:22:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:22:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:22:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:22:07,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:22:08,065 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:22:08,066 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:22:08,790 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:22:08,805 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:22:08,806 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 01:22:08,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:22:08 BoogieIcfgContainer [2021-12-16 01:22:08,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:22:08,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:22:08,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:22:08,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:22:08,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:22:07" (1/3) ... [2021-12-16 01:22:08,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff84065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:22:08, skipping insertion in model container [2021-12-16 01:22:08,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:22:07" (2/3) ... [2021-12-16 01:22:08,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff84065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:22:08, skipping insertion in model container [2021-12-16 01:22:08,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:22:08" (3/3) ... [2021-12-16 01:22:08,815 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-12-16 01:22:08,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:22:08,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:22:08,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:22:08,868 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 [2021-12-16 01:22:08,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:22:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 294 states, 292 states have (on average 1.7945205479452055) internal successors, (524), 293 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 01:22:08,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:08,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:08,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash -37487086, now seen corresponding path program 1 times [2021-12-16 01:22:08,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:08,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750730306] [2021-12-16 01:22:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:08,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:09,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:09,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750730306] [2021-12-16 01:22:09,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750730306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:09,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:09,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:22:09,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844750379] [2021-12-16 01:22:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:09,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:22:09,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:22:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:09,352 INFO L87 Difference]: Start difference. First operand has 294 states, 292 states have (on average 1.7945205479452055) internal successors, (524), 293 states have internal predecessors, (524), 0 states have call successors, (0), 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 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:09,467 INFO L93 Difference]: Finished difference Result 590 states and 1044 transitions. [2021-12-16 01:22:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:22:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 [2021-12-16 01:22:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:09,480 INFO L225 Difference]: With dead ends: 590 [2021-12-16 01:22:09,480 INFO L226 Difference]: Without dead ends: 473 [2021-12-16 01:22:09,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:09,486 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 347 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:09,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 873 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-12-16 01:22:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2021-12-16 01:22:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.4936170212765958) internal successors, (702), 470 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 702 transitions. [2021-12-16 01:22:09,549 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 702 transitions. Word has length 141 [2021-12-16 01:22:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:09,550 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 702 transitions. [2021-12-16 01:22:09,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 702 transitions. [2021-12-16 01:22:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 01:22:09,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:09,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:09,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:22:09,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash -106858572, now seen corresponding path program 1 times [2021-12-16 01:22:09,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355491962] [2021-12-16 01:22:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:09,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:09,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355491962] [2021-12-16 01:22:09,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355491962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:09,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:09,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:09,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202181268] [2021-12-16 01:22:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:09,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:09,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:09,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:09,836 INFO L87 Difference]: Start difference. First operand 471 states and 702 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:09,929 INFO L93 Difference]: Finished difference Result 1380 states and 2051 transitions. [2021-12-16 01:22:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:09,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 [2021-12-16 01:22:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:09,935 INFO L225 Difference]: With dead ends: 1380 [2021-12-16 01:22:09,935 INFO L226 Difference]: Without dead ends: 918 [2021-12-16 01:22:09,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:09,943 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 853 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:09,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 1121 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-12-16 01:22:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2021-12-16 01:22:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.4775956284153005) internal successors, (1352), 915 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1352 transitions. [2021-12-16 01:22:09,999 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1352 transitions. Word has length 141 [2021-12-16 01:22:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:10,001 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1352 transitions. [2021-12-16 01:22:10,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1352 transitions. [2021-12-16 01:22:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-16 01:22:10,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:10,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:10,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:22:10,013 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1746789024, now seen corresponding path program 1 times [2021-12-16 01:22:10,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:10,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593860061] [2021-12-16 01:22:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:10,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:10,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:10,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593860061] [2021-12-16 01:22:10,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593860061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:10,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:10,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:22:10,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319804780] [2021-12-16 01:22:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:10,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:22:10,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:22:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:10,116 INFO L87 Difference]: Start difference. First operand 916 states and 1352 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:10,166 INFO L93 Difference]: Finished difference Result 2710 states and 3994 transitions. [2021-12-16 01:22:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:22:10,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 [2021-12-16 01:22:10,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:10,173 INFO L225 Difference]: With dead ends: 2710 [2021-12-16 01:22:10,173 INFO L226 Difference]: Without dead ends: 1822 [2021-12-16 01:22:10,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:10,181 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 415 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:10,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 1255 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2021-12-16 01:22:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 918. [2021-12-16 01:22:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.4765539803707743) internal successors, (1354), 917 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1354 transitions. [2021-12-16 01:22:10,224 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1354 transitions. Word has length 142 [2021-12-16 01:22:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:10,224 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1354 transitions. [2021-12-16 01:22:10,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1354 transitions. [2021-12-16 01:22:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 01:22:10,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:10,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:10,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:22:10,227 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:10,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash 463094692, now seen corresponding path program 1 times [2021-12-16 01:22:10,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:10,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131688172] [2021-12-16 01:22:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:10,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:10,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:10,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131688172] [2021-12-16 01:22:10,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131688172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:10,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:10,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:22:10,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321770339] [2021-12-16 01:22:10,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:10,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:22:10,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:22:10,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:10,305 INFO L87 Difference]: Start difference. First operand 918 states and 1354 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:10,393 INFO L93 Difference]: Finished difference Result 2514 states and 3723 transitions. [2021-12-16 01:22:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:22:10,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-16 01:22:10,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:10,400 INFO L225 Difference]: With dead ends: 2514 [2021-12-16 01:22:10,400 INFO L226 Difference]: Without dead ends: 1774 [2021-12-16 01:22:10,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:10,407 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 354 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:10,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1153 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2021-12-16 01:22:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1772. [2021-12-16 01:22:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 1.460756634669678) internal successors, (2587), 1771 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2587 transitions. [2021-12-16 01:22:10,467 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2587 transitions. Word has length 143 [2021-12-16 01:22:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:10,467 INFO L470 AbstractCegarLoop]: Abstraction has 1772 states and 2587 transitions. [2021-12-16 01:22:10,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2587 transitions. [2021-12-16 01:22:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 01:22:10,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:10,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:10,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:22:10,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2076257255, now seen corresponding path program 1 times [2021-12-16 01:22:10,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:10,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222741395] [2021-12-16 01:22:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:10,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:10,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:10,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222741395] [2021-12-16 01:22:10,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222741395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:10,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:10,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:22:10,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732375560] [2021-12-16 01:22:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:10,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:22:10,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:22:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:10,640 INFO L87 Difference]: Start difference. First operand 1772 states and 2587 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:10,772 INFO L93 Difference]: Finished difference Result 5046 states and 7368 transitions. [2021-12-16 01:22:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:10,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-16 01:22:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:10,784 INFO L225 Difference]: With dead ends: 5046 [2021-12-16 01:22:10,784 INFO L226 Difference]: Without dead ends: 3288 [2021-12-16 01:22:10,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:10,787 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1256 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:10,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 1114 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2021-12-16 01:22:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3286. [2021-12-16 01:22:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3285 states have (on average 1.4487062404870623) internal successors, (4759), 3285 states have internal predecessors, (4759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4759 transitions. [2021-12-16 01:22:10,930 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4759 transitions. Word has length 143 [2021-12-16 01:22:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:10,932 INFO L470 AbstractCegarLoop]: Abstraction has 3286 states and 4759 transitions. [2021-12-16 01:22:10,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4759 transitions. [2021-12-16 01:22:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 01:22:10,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:10,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:10,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:22:10,940 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash 407122579, now seen corresponding path program 1 times [2021-12-16 01:22:10,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:10,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291232339] [2021-12-16 01:22:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:10,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:11,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291232339] [2021-12-16 01:22:11,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291232339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:11,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:11,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:11,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393660815] [2021-12-16 01:22:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:11,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:11,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:11,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:11,064 INFO L87 Difference]: Start difference. First operand 3286 states and 4759 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:11,333 INFO L93 Difference]: Finished difference Result 9553 states and 13784 transitions. [2021-12-16 01:22:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:11,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-16 01:22:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:11,353 INFO L225 Difference]: With dead ends: 9553 [2021-12-16 01:22:11,353 INFO L226 Difference]: Without dead ends: 6323 [2021-12-16 01:22:11,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:11,360 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 835 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:11,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 1084 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2021-12-16 01:22:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 6321. [2021-12-16 01:22:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6321 states, 6320 states have (on average 1.428006329113924) internal successors, (9025), 6320 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6321 states to 6321 states and 9025 transitions. [2021-12-16 01:22:11,664 INFO L78 Accepts]: Start accepts. Automaton has 6321 states and 9025 transitions. Word has length 143 [2021-12-16 01:22:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:11,665 INFO L470 AbstractCegarLoop]: Abstraction has 6321 states and 9025 transitions. [2021-12-16 01:22:11,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 6321 states and 9025 transitions. [2021-12-16 01:22:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 01:22:11,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:11,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:11,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:22:11,672 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1881733921, now seen corresponding path program 1 times [2021-12-16 01:22:11,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:11,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463053216] [2021-12-16 01:22:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:11,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:11,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:11,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463053216] [2021-12-16 01:22:11,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463053216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:11,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:11,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:22:11,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531659488] [2021-12-16 01:22:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:11,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:22:11,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:22:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:11,704 INFO L87 Difference]: Start difference. First operand 6321 states and 9025 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:12,111 INFO L93 Difference]: Finished difference Result 18811 states and 26842 transitions. [2021-12-16 01:22:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:22:12,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-12-16 01:22:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:12,152 INFO L225 Difference]: With dead ends: 18811 [2021-12-16 01:22:12,152 INFO L226 Difference]: Without dead ends: 12581 [2021-12-16 01:22:12,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:12,162 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 401 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:12,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 915 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12581 states. [2021-12-16 01:22:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12581 to 6331. [2021-12-16 01:22:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6330 states have (on average 1.4273301737756714) internal successors, (9035), 6330 states have internal predecessors, (9035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 9035 transitions. [2021-12-16 01:22:12,500 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 9035 transitions. Word has length 144 [2021-12-16 01:22:12,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:12,500 INFO L470 AbstractCegarLoop]: Abstraction has 6331 states and 9035 transitions. [2021-12-16 01:22:12,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 9035 transitions. [2021-12-16 01:22:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 01:22:12,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:12,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:12,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:22:12,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1026353394, now seen corresponding path program 1 times [2021-12-16 01:22:12,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:12,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309089074] [2021-12-16 01:22:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:12,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:12,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:12,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309089074] [2021-12-16 01:22:12,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309089074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:12,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:12,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:12,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860433974] [2021-12-16 01:22:12,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:12,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:12,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:12,579 INFO L87 Difference]: Start difference. First operand 6331 states and 9035 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:12,974 INFO L93 Difference]: Finished difference Result 17179 states and 24404 transitions. [2021-12-16 01:22:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-16 01:22:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:12,996 INFO L225 Difference]: With dead ends: 17179 [2021-12-16 01:22:12,997 INFO L226 Difference]: Without dead ends: 10949 [2021-12-16 01:22:13,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:13,008 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 831 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:13,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 1071 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10949 states. [2021-12-16 01:22:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10949 to 10947. [2021-12-16 01:22:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10947 states, 10946 states have (on average 1.4007856751324685) internal successors, (15333), 10946 states have internal predecessors, (15333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10947 states to 10947 states and 15333 transitions. [2021-12-16 01:22:13,538 INFO L78 Accepts]: Start accepts. Automaton has 10947 states and 15333 transitions. Word has length 145 [2021-12-16 01:22:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:13,539 INFO L470 AbstractCegarLoop]: Abstraction has 10947 states and 15333 transitions. [2021-12-16 01:22:13,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 10947 states and 15333 transitions. [2021-12-16 01:22:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:22:13,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:13,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:13,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:22:13,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash 972165086, now seen corresponding path program 1 times [2021-12-16 01:22:13,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:13,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266583859] [2021-12-16 01:22:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:13,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:13,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:13,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266583859] [2021-12-16 01:22:13,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266583859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:13,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:13,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:22:13,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576837298] [2021-12-16 01:22:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:13,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:22:13,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:22:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:13,595 INFO L87 Difference]: Start difference. First operand 10947 states and 15333 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:14,323 INFO L93 Difference]: Finished difference Result 31689 states and 44543 transitions. [2021-12-16 01:22:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:22:14,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-12-16 01:22:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:14,363 INFO L225 Difference]: With dead ends: 31689 [2021-12-16 01:22:14,363 INFO L226 Difference]: Without dead ends: 21617 [2021-12-16 01:22:14,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:14,382 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 387 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:14,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1227 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:14,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21617 states. [2021-12-16 01:22:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21617 to 10967. [2021-12-16 01:22:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10967 states, 10966 states have (on average 1.4000547145723143) internal successors, (15353), 10966 states have internal predecessors, (15353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10967 states to 10967 states and 15353 transitions. [2021-12-16 01:22:14,962 INFO L78 Accepts]: Start accepts. Automaton has 10967 states and 15353 transitions. Word has length 146 [2021-12-16 01:22:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:14,962 INFO L470 AbstractCegarLoop]: Abstraction has 10967 states and 15353 transitions. [2021-12-16 01:22:14,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10967 states and 15353 transitions. [2021-12-16 01:22:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 01:22:14,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:14,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:14,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:22:14,975 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1548655907, now seen corresponding path program 1 times [2021-12-16 01:22:14,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:14,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851608165] [2021-12-16 01:22:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:14,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:15,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:15,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851608165] [2021-12-16 01:22:15,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851608165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:15,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:15,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:22:15,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366454045] [2021-12-16 01:22:15,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:15,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:22:15,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:22:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:15,064 INFO L87 Difference]: Start difference. First operand 10967 states and 15353 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:15,559 INFO L93 Difference]: Finished difference Result 22531 states and 31363 transitions. [2021-12-16 01:22:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2021-12-16 01:22:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:15,578 INFO L225 Difference]: With dead ends: 22531 [2021-12-16 01:22:15,579 INFO L226 Difference]: Without dead ends: 11789 [2021-12-16 01:22:15,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:15,590 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 1231 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:15,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 1076 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11789 states. [2021-12-16 01:22:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11789 to 11449. [2021-12-16 01:22:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11449 states, 11448 states have (on average 1.3874912648497555) internal successors, (15884), 11448 states have internal predecessors, (15884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11449 states to 11449 states and 15884 transitions. [2021-12-16 01:22:16,018 INFO L78 Accepts]: Start accepts. Automaton has 11449 states and 15884 transitions. Word has length 147 [2021-12-16 01:22:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:16,018 INFO L470 AbstractCegarLoop]: Abstraction has 11449 states and 15884 transitions. [2021-12-16 01:22:16,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 11449 states and 15884 transitions. [2021-12-16 01:22:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 01:22:16,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:16,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:16,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:22:16,031 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1691329839, now seen corresponding path program 1 times [2021-12-16 01:22:16,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:16,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795989591] [2021-12-16 01:22:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:16,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:16,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:16,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795989591] [2021-12-16 01:22:16,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795989591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:16,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:16,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:16,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207021533] [2021-12-16 01:22:16,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:16,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:16,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:16,098 INFO L87 Difference]: Start difference. First operand 11449 states and 15884 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:16,486 INFO L93 Difference]: Finished difference Result 18605 states and 25810 transitions. [2021-12-16 01:22:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:16,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2021-12-16 01:22:16,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:16,501 INFO L225 Difference]: With dead ends: 18605 [2021-12-16 01:22:16,501 INFO L226 Difference]: Without dead ends: 7328 [2021-12-16 01:22:16,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:16,514 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 65 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:16,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1306 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2021-12-16 01:22:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 7328. [2021-12-16 01:22:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 7327 states have (on average 1.3816022928893135) internal successors, (10123), 7327 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 10123 transitions. [2021-12-16 01:22:16,892 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 10123 transitions. Word has length 147 [2021-12-16 01:22:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:16,892 INFO L470 AbstractCegarLoop]: Abstraction has 7328 states and 10123 transitions. [2021-12-16 01:22:16,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 10123 transitions. [2021-12-16 01:22:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-16 01:22:16,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:16,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:16,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:22:16,901 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:16,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash 477794436, now seen corresponding path program 1 times [2021-12-16 01:22:16,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:16,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751669239] [2021-12-16 01:22:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:16,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:16,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751669239] [2021-12-16 01:22:16,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751669239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:16,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:16,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:22:16,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679327949] [2021-12-16 01:22:16,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:16,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:22:16,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:16,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:22:16,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:16,942 INFO L87 Difference]: Start difference. First operand 7328 states and 10123 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:17,511 INFO L93 Difference]: Finished difference Result 19761 states and 27537 transitions. [2021-12-16 01:22:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:22:17,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-12-16 01:22:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:17,537 INFO L225 Difference]: With dead ends: 19761 [2021-12-16 01:22:17,538 INFO L226 Difference]: Without dead ends: 13779 [2021-12-16 01:22:17,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:17,550 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 344 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:17,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1175 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13779 states. [2021-12-16 01:22:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13779 to 13777. [2021-12-16 01:22:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 1.367232868757259) internal successors, (18835), 13776 states have internal predecessors, (18835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 18835 transitions. [2021-12-16 01:22:18,355 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 18835 transitions. Word has length 152 [2021-12-16 01:22:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:18,355 INFO L470 AbstractCegarLoop]: Abstraction has 13777 states and 18835 transitions. [2021-12-16 01:22:18,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 18835 transitions. [2021-12-16 01:22:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-16 01:22:18,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:18,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:18,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:22:18,369 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:18,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1506973983, now seen corresponding path program 1 times [2021-12-16 01:22:18,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:18,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087149222] [2021-12-16 01:22:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:18,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:18,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:18,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087149222] [2021-12-16 01:22:18,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087149222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:18,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:18,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:18,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191155528] [2021-12-16 01:22:18,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:18,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:22:18,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:18,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:22:18,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:18,424 INFO L87 Difference]: Start difference. First operand 13777 states and 18835 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:19,051 INFO L93 Difference]: Finished difference Result 26226 states and 36201 transitions. [2021-12-16 01:22:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:22:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-12-16 01:22:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:19,075 INFO L225 Difference]: With dead ends: 26226 [2021-12-16 01:22:19,075 INFO L226 Difference]: Without dead ends: 13777 [2021-12-16 01:22:19,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:22:19,092 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1086 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:19,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 409 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:22:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13777 states. [2021-12-16 01:22:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13777 to 13777. [2021-12-16 01:22:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 1.3566347270615564) internal successors, (18689), 13776 states have internal predecessors, (18689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 18689 transitions. [2021-12-16 01:22:19,681 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 18689 transitions. Word has length 152 [2021-12-16 01:22:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:19,682 INFO L470 AbstractCegarLoop]: Abstraction has 13777 states and 18689 transitions. [2021-12-16 01:22:19,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 18689 transitions. [2021-12-16 01:22:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-16 01:22:19,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:19,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:19,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:22:19,697 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:19,698 INFO L85 PathProgramCache]: Analyzing trace with hash 211573798, now seen corresponding path program 1 times [2021-12-16 01:22:19,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:19,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647155886] [2021-12-16 01:22:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:19,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:19,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:19,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647155886] [2021-12-16 01:22:19,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647155886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:19,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:19,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:19,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726478279] [2021-12-16 01:22:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:19,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:19,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:19,779 INFO L87 Difference]: Start difference. First operand 13777 states and 18689 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:20,629 INFO L93 Difference]: Finished difference Result 30332 states and 42929 transitions. [2021-12-16 01:22:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-12-16 01:22:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:20,673 INFO L225 Difference]: With dead ends: 30332 [2021-12-16 01:22:20,673 INFO L226 Difference]: Without dead ends: 24358 [2021-12-16 01:22:20,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:20,691 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 774 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:20,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 762 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:22:20,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24358 states. [2021-12-16 01:22:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24358 to 24356. [2021-12-16 01:22:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24356 states, 24355 states have (on average 1.3745842742763292) internal successors, (33478), 24355 states have internal predecessors, (33478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24356 states to 24356 states and 33478 transitions. [2021-12-16 01:22:21,762 INFO L78 Accepts]: Start accepts. Automaton has 24356 states and 33478 transitions. Word has length 152 [2021-12-16 01:22:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:21,763 INFO L470 AbstractCegarLoop]: Abstraction has 24356 states and 33478 transitions. [2021-12-16 01:22:21,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 24356 states and 33478 transitions. [2021-12-16 01:22:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-16 01:22:21,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:21,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:21,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:22:21,783 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 256672605, now seen corresponding path program 1 times [2021-12-16 01:22:21,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:21,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932446610] [2021-12-16 01:22:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:21,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:21,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:21,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932446610] [2021-12-16 01:22:21,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932446610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:21,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:21,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:21,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361271818] [2021-12-16 01:22:21,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:21,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:21,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:21,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:21,858 INFO L87 Difference]: Start difference. First operand 24356 states and 33478 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:22,823 INFO L93 Difference]: Finished difference Result 38417 states and 52944 transitions. [2021-12-16 01:22:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-12-16 01:22:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:22,862 INFO L225 Difference]: With dead ends: 38417 [2021-12-16 01:22:22,862 INFO L226 Difference]: Without dead ends: 19705 [2021-12-16 01:22:22,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:22,880 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 53 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:22,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1283 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:22,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19705 states. [2021-12-16 01:22:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19705 to 19705. [2021-12-16 01:22:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19705 states, 19704 states have (on average 1.371751928542428) internal successors, (27029), 19704 states have internal predecessors, (27029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19705 states to 19705 states and 27029 transitions. [2021-12-16 01:22:23,993 INFO L78 Accepts]: Start accepts. Automaton has 19705 states and 27029 transitions. Word has length 152 [2021-12-16 01:22:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:23,993 INFO L470 AbstractCegarLoop]: Abstraction has 19705 states and 27029 transitions. [2021-12-16 01:22:23,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 19705 states and 27029 transitions. [2021-12-16 01:22:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-16 01:22:24,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:24,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:24,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:22:24,007 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1780029436, now seen corresponding path program 1 times [2021-12-16 01:22:24,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:24,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331490776] [2021-12-16 01:22:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:24,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:24,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:24,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331490776] [2021-12-16 01:22:24,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331490776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:24,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:24,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:22:24,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471996848] [2021-12-16 01:22:24,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:24,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 01:22:24,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 01:22:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:22:24,094 INFO L87 Difference]: Start difference. First operand 19705 states and 27029 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:26,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:26,982 INFO L93 Difference]: Finished difference Result 62587 states and 90534 transitions. [2021-12-16 01:22:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 01:22:26,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-12-16 01:22:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:27,071 INFO L225 Difference]: With dead ends: 62587 [2021-12-16 01:22:27,072 INFO L226 Difference]: Without dead ends: 45885 [2021-12-16 01:22:27,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:22:27,100 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 4437 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:27,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4437 Valid, 1125 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:22:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45885 states. [2021-12-16 01:22:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45885 to 28647. [2021-12-16 01:22:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28647 states, 28646 states have (on average 1.4067932695664316) internal successors, (40299), 28646 states have internal predecessors, (40299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28647 states to 28647 states and 40299 transitions. [2021-12-16 01:22:28,818 INFO L78 Accepts]: Start accepts. Automaton has 28647 states and 40299 transitions. Word has length 155 [2021-12-16 01:22:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:28,818 INFO L470 AbstractCegarLoop]: Abstraction has 28647 states and 40299 transitions. [2021-12-16 01:22:28,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 28647 states and 40299 transitions. [2021-12-16 01:22:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-16 01:22:28,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:28,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:28,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:22:28,831 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1190617374, now seen corresponding path program 1 times [2021-12-16 01:22:28,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:28,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57855753] [2021-12-16 01:22:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:28,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:28,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:28,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57855753] [2021-12-16 01:22:28,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57855753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:28,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:28,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:28,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133607790] [2021-12-16 01:22:28,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:28,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:28,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:28,912 INFO L87 Difference]: Start difference. First operand 28647 states and 40299 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:30,189 INFO L93 Difference]: Finished difference Result 53288 states and 74933 transitions. [2021-12-16 01:22:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-12-16 01:22:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:30,231 INFO L225 Difference]: With dead ends: 53288 [2021-12-16 01:22:30,232 INFO L226 Difference]: Without dead ends: 24699 [2021-12-16 01:22:30,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:30,256 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 43 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:30,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1248 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24699 states. [2021-12-16 01:22:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24699 to 24699. [2021-12-16 01:22:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24699 states, 24698 states have (on average 1.4052554862741922) internal successors, (34707), 24698 states have internal predecessors, (34707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24699 states to 24699 states and 34707 transitions. [2021-12-16 01:22:31,740 INFO L78 Accepts]: Start accepts. Automaton has 24699 states and 34707 transitions. Word has length 155 [2021-12-16 01:22:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:31,740 INFO L470 AbstractCegarLoop]: Abstraction has 24699 states and 34707 transitions. [2021-12-16 01:22:31,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 24699 states and 34707 transitions. [2021-12-16 01:22:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-16 01:22:31,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:31,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:31,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 01:22:31,753 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1407593907, now seen corresponding path program 1 times [2021-12-16 01:22:31,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:31,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120976239] [2021-12-16 01:22:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:31,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:31,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:31,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120976239] [2021-12-16 01:22:31,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120976239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:31,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:31,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:31,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145225459] [2021-12-16 01:22:31,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:31,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:31,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:31,837 INFO L87 Difference]: Start difference. First operand 24699 states and 34707 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:33,171 INFO L93 Difference]: Finished difference Result 46270 states and 64938 transitions. [2021-12-16 01:22:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:33,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-16 01:22:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:33,207 INFO L225 Difference]: With dead ends: 46270 [2021-12-16 01:22:33,207 INFO L226 Difference]: Without dead ends: 21835 [2021-12-16 01:22:33,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:33,233 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 862 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:33,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 946 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21835 states. [2021-12-16 01:22:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21835 to 21763. [2021-12-16 01:22:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21763 states, 21762 states have (on average 1.3987684955426891) internal successors, (30440), 21762 states have internal predecessors, (30440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21763 states to 21763 states and 30440 transitions. [2021-12-16 01:22:34,542 INFO L78 Accepts]: Start accepts. Automaton has 21763 states and 30440 transitions. Word has length 161 [2021-12-16 01:22:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:34,542 INFO L470 AbstractCegarLoop]: Abstraction has 21763 states and 30440 transitions. [2021-12-16 01:22:34,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 21763 states and 30440 transitions. [2021-12-16 01:22:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 01:22:34,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:34,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:34,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 01:22:34,552 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1801353677, now seen corresponding path program 1 times [2021-12-16 01:22:34,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:34,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575628205] [2021-12-16 01:22:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:34,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:34,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:34,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575628205] [2021-12-16 01:22:34,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575628205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:34,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:34,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:22:34,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576063262] [2021-12-16 01:22:34,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:34,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:22:34,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:22:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:22:34,616 INFO L87 Difference]: Start difference. First operand 21763 states and 30440 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:35,603 INFO L93 Difference]: Finished difference Result 30778 states and 43056 transitions. [2021-12-16 01:22:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:22:35,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2021-12-16 01:22:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:35,631 INFO L225 Difference]: With dead ends: 30778 [2021-12-16 01:22:35,631 INFO L226 Difference]: Without dead ends: 18884 [2021-12-16 01:22:35,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:35,645 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 21 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:35,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1222 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:22:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18884 states. [2021-12-16 01:22:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18884 to 18884. [2021-12-16 01:22:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18884 states, 18883 states have (on average 1.3949584282158556) internal successors, (26341), 18883 states have internal predecessors, (26341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18884 states to 18884 states and 26341 transitions. [2021-12-16 01:22:36,661 INFO L78 Accepts]: Start accepts. Automaton has 18884 states and 26341 transitions. Word has length 163 [2021-12-16 01:22:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:36,661 INFO L470 AbstractCegarLoop]: Abstraction has 18884 states and 26341 transitions. [2021-12-16 01:22:36,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 18884 states and 26341 transitions. [2021-12-16 01:22:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 01:22:36,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:36,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:36,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 01:22:36,670 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:36,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1487758919, now seen corresponding path program 1 times [2021-12-16 01:22:36,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:36,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982948831] [2021-12-16 01:22:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:36,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:37,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:37,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982948831] [2021-12-16 01:22:37,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982948831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:37,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:37,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-16 01:22:37,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721057074] [2021-12-16 01:22:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:37,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 01:22:37,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 01:22:37,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:22:37,389 INFO L87 Difference]: Start difference. First operand 18884 states and 26341 transitions. Second operand has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:50,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:50,016 INFO L93 Difference]: Finished difference Result 81713 states and 116815 transitions. [2021-12-16 01:22:50,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-16 01:22:50,017 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-12-16 01:22:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:50,166 INFO L225 Difference]: With dead ends: 81713 [2021-12-16 01:22:50,166 INFO L226 Difference]: Without dead ends: 78427 [2021-12-16 01:22:50,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1028, Invalid=4374, Unknown=0, NotChecked=0, Total=5402 [2021-12-16 01:22:50,196 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 7975 mSDsluCounter, 12774 mSDsCounter, 0 mSdLazyCounter, 4793 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7975 SdHoareTripleChecker+Valid, 13573 SdHoareTripleChecker+Invalid, 5088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 4793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:50,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7975 Valid, 13573 Invalid, 5088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 4793 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 01:22:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78427 states. [2021-12-16 01:22:52,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78427 to 19904. [2021-12-16 01:22:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19904 states, 19903 states have (on average 1.3838114857056725) internal successors, (27542), 19903 states have internal predecessors, (27542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19904 states to 19904 states and 27542 transitions. [2021-12-16 01:22:52,675 INFO L78 Accepts]: Start accepts. Automaton has 19904 states and 27542 transitions. Word has length 168 [2021-12-16 01:22:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:52,677 INFO L470 AbstractCegarLoop]: Abstraction has 19904 states and 27542 transitions. [2021-12-16 01:22:52,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 19904 states and 27542 transitions. [2021-12-16 01:22:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 01:22:52,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:52,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:52,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 01:22:52,720 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1422081639, now seen corresponding path program 1 times [2021-12-16 01:22:52,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:52,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917248490] [2021-12-16 01:22:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:52,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:52,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:52,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917248490] [2021-12-16 01:22:52,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917248490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:52,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:52,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:22:52,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27639368] [2021-12-16 01:22:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:52,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:22:52,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:22:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:22:52,788 INFO L87 Difference]: Start difference. First operand 19904 states and 27542 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:55,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:22:55,301 INFO L93 Difference]: Finished difference Result 36250 states and 52442 transitions. [2021-12-16 01:22:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:22:55,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-12-16 01:22:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:22:55,366 INFO L225 Difference]: With dead ends: 36250 [2021-12-16 01:22:55,366 INFO L226 Difference]: Without dead ends: 30868 [2021-12-16 01:22:55,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:22:55,385 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 893 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:22:55,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 1402 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:22:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30868 states. [2021-12-16 01:22:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30868 to 25500. [2021-12-16 01:22:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25500 states, 25499 states have (on average 1.4120161574963723) internal successors, (36005), 25499 states have internal predecessors, (36005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25500 states to 25500 states and 36005 transitions. [2021-12-16 01:22:57,591 INFO L78 Accepts]: Start accepts. Automaton has 25500 states and 36005 transitions. Word has length 168 [2021-12-16 01:22:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:22:57,592 INFO L470 AbstractCegarLoop]: Abstraction has 25500 states and 36005 transitions. [2021-12-16 01:22:57,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:22:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25500 states and 36005 transitions. [2021-12-16 01:22:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 01:22:57,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:22:57,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:22:57,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 01:22:57,605 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:22:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:22:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1392072489, now seen corresponding path program 1 times [2021-12-16 01:22:57,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:22:57,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178174935] [2021-12-16 01:22:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:22:57,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:22:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:22:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:22:57,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:22:57,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178174935] [2021-12-16 01:22:57,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178174935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:22:57,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:22:57,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:22:57,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520669931] [2021-12-16 01:22:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:22:57,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:22:57,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:22:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:22:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:22:57,655 INFO L87 Difference]: Start difference. First operand 25500 states and 36005 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:23:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:23:01,416 INFO L93 Difference]: Finished difference Result 61997 states and 89736 transitions. [2021-12-16 01:23:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:23:01,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-12-16 01:23:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:23:01,486 INFO L225 Difference]: With dead ends: 61997 [2021-12-16 01:23:01,487 INFO L226 Difference]: Without dead ends: 44973 [2021-12-16 01:23:01,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:23:01,505 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 223 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:23:01,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 690 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:23:01,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44973 states. [2021-12-16 01:23:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44973 to 44971. [2021-12-16 01:23:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44971 states, 44970 states have (on average 1.4144540804981098) internal successors, (63608), 44970 states have internal predecessors, (63608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:23:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44971 states to 44971 states and 63608 transitions. [2021-12-16 01:23:05,483 INFO L78 Accepts]: Start accepts. Automaton has 44971 states and 63608 transitions. Word has length 168 [2021-12-16 01:23:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:23:05,484 INFO L470 AbstractCegarLoop]: Abstraction has 44971 states and 63608 transitions. [2021-12-16 01:23:05,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:23:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 44971 states and 63608 transitions. [2021-12-16 01:23:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 01:23:05,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:23:05,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:23:05,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 01:23:05,502 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:23:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:23:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash 631397051, now seen corresponding path program 1 times [2021-12-16 01:23:05,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:23:05,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214203137] [2021-12-16 01:23:05,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:23:05,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:23:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:23:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:23:05,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:23:05,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214203137] [2021-12-16 01:23:05,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214203137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:23:05,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:23:05,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:23:05,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547942546] [2021-12-16 01:23:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:23:05,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 01:23:05,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:23:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 01:23:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:23:05,611 INFO L87 Difference]: Start difference. First operand 44971 states and 63608 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:23:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:23:09,561 INFO L93 Difference]: Finished difference Result 68431 states and 99018 transitions. [2021-12-16 01:23:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:23:09,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-12-16 01:23:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:23:09,636 INFO L225 Difference]: With dead ends: 68431 [2021-12-16 01:23:09,637 INFO L226 Difference]: Without dead ends: 44973 [2021-12-16 01:23:09,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:23:09,662 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1967 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:23:09,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 1095 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:23:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44973 states. [2021-12-16 01:23:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44973 to 44971. [2021-12-16 01:23:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44971 states, 44970 states have (on average 1.408027573938181) internal successors, (63319), 44970 states have internal predecessors, (63319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:23:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44971 states to 44971 states and 63319 transitions. [2021-12-16 01:23:13,884 INFO L78 Accepts]: Start accepts. Automaton has 44971 states and 63319 transitions. Word has length 168 [2021-12-16 01:23:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:23:13,885 INFO L470 AbstractCegarLoop]: Abstraction has 44971 states and 63319 transitions. [2021-12-16 01:23:13,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:23:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 44971 states and 63319 transitions. [2021-12-16 01:23:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 01:23:13,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:23:13,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:23:13,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 01:23:13,903 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:23:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:23:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash 751294860, now seen corresponding path program 1 times [2021-12-16 01:23:13,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:23:13,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913303829] [2021-12-16 01:23:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:23:13,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:23:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:23:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:23:14,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:23:14,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913303829] [2021-12-16 01:23:14,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913303829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:23:14,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:23:14,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:23:14,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81385241] [2021-12-16 01:23:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:23:14,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:23:14,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:23:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:23:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:23:14,023 INFO L87 Difference]: Start difference. First operand 44971 states and 63319 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)