./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.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 132c4c7f806b54f430f28cb3d47097ee784675c7b1df08a5c424914fbf614b6c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:04:41,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:04:41,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:04:41,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:04:41,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:04:41,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:04:41,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:04:41,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:04:41,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:04:41,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:04:41,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:04:41,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:04:41,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:04:41,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:04:41,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:04:41,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:04:41,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:04:41,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:04:41,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:04:41,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:04:41,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:04:41,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:04:41,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:04:41,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:04:41,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:04:41,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:04:41,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:04:41,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:04:41,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:04:41,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:04:41,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:04:41,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:04:41,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:04:41,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:04:41,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:04:41,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:04:41,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:04:41,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:04:41,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:04:41,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:04:41,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:04:41,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:04:41,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:04:41,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:04:41,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:04:41,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:04:41,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:04:41,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:04:41,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:04:41,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:04:41,842 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:04:41,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:04:41,843 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:04:41,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:04:41,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:04:41,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:04:41,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:04:41,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:04:41,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:04:41,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:04:41,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:04:41,845 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:04:41,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:04:41,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:04:41,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:04:41,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:04:41,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:04:41,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:04:41,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:04:41,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:04:41,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:04:41,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:04:41,847 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:04:41,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:04:41,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:04:41,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:04:41,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 132c4c7f806b54f430f28cb3d47097ee784675c7b1df08a5c424914fbf614b6c [2021-12-15 12:04:42,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:04:42,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:04:42,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:04:42,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:04:42,106 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:04:42,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2021-12-15 12:04:42,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f79fa124f/b16bc1c778eb4668b1b83ab791a82fbc/FLAG445d0b94c [2021-12-15 12:04:42,774 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:04:42,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2021-12-15 12:04:42,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f79fa124f/b16bc1c778eb4668b1b83ab791a82fbc/FLAG445d0b94c [2021-12-15 12:04:42,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f79fa124f/b16bc1c778eb4668b1b83ab791a82fbc [2021-12-15 12:04:42,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:04:42,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:04:42,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:04:42,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:04:42,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:04:42,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:04:42" (1/1) ... [2021-12-15 12:04:42,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682a616a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:42, skipping insertion in model container [2021-12-15 12:04:42,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:04:42" (1/1) ... [2021-12-15 12:04:42,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:04:43,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:04:43,471 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[11677,11690] [2021-12-15 12:04:43,525 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[18613,18626] [2021-12-15 12:04:44,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:04:44,161 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:04:44,200 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[11677,11690] [2021-12-15 12:04:44,216 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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[18613,18626] [2021-12-15 12:04:44,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:04:44,596 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:04:44,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44 WrapperNode [2021-12-15 12:04:44,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:04:44,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:04:44,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:04:44,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:04:44,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:44,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,062 INFO L137 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5091 [2021-12-15 12:04:45,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:04:45,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:04:45,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:04:45,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:04:45,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:04:45,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:04:45,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:04:45,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:04:45,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (1/1) ... [2021-12-15 12:04:45,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:04:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:04:45,630 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) [2021-12-15 12:04:45,655 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 [2021-12-15 12:04:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:04:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:04:45,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:04:45,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:04:45,810 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:04:45,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:04:49,041 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:04:49,054 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:04:49,054 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 12:04:49,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:04:49 BoogieIcfgContainer [2021-12-15 12:04:49,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:04:49,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:04:49,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:04:49,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:04:49,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:04:42" (1/3) ... [2021-12-15 12:04:49,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b09f842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:04:49, skipping insertion in model container [2021-12-15 12:04:49,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:04:44" (2/3) ... [2021-12-15 12:04:49,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b09f842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:04:49, skipping insertion in model container [2021-12-15 12:04:49,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:04:49" (3/3) ... [2021-12-15 12:04:49,064 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2021-12-15 12:04:49,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:04:49,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:04:49,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:04:49,116 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 [2021-12-15 12:04:49,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:04:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 12:04:49,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:49,150 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] [2021-12-15 12:04:49,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:49,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2021-12-15 12:04:49,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:49,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6313009] [2021-12-15 12:04:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:49,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:49,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:49,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6313009] [2021-12-15 12:04:49,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6313009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:49,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:49,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:04:49,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892876250] [2021-12-15 12:04:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:49,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 12:04:49,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 12:04:49,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:04:49,371 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:49,454 INFO L93 Difference]: Finished difference Result 1781 states and 3374 transitions. [2021-12-15 12:04:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 12:04:49,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-12-15 12:04:49,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:49,492 INFO L225 Difference]: With dead ends: 1781 [2021-12-15 12:04:49,493 INFO L226 Difference]: Without dead ends: 843 [2021-12-15 12:04:49,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:04:49,506 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:49,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-15 12:04:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-12-15 12:04:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2021-12-15 12:04:49,571 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2021-12-15 12:04:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:49,572 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2021-12-15 12:04:49,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2021-12-15 12:04:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 12:04:49,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:49,574 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] [2021-12-15 12:04:49,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:04:49,575 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2021-12-15 12:04:49,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:49,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129764243] [2021-12-15 12:04:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:49,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:49,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:49,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129764243] [2021-12-15 12:04:49,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129764243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:49,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:49,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:04:49,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016519093] [2021-12-15 12:04:49,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:49,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 12:04:49,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 12:04:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 12:04:49,647 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:49,779 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2021-12-15 12:04:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 12:04:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-12-15 12:04:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:49,787 INFO L225 Difference]: With dead ends: 899 [2021-12-15 12:04:49,787 INFO L226 Difference]: Without dead ends: 843 [2021-12-15 12:04:49,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:04:49,789 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:49,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-15 12:04:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-12-15 12:04:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2021-12-15 12:04:49,810 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2021-12-15 12:04:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:49,810 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2021-12-15 12:04:49,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2021-12-15 12:04:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-15 12:04:49,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:49,813 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] [2021-12-15 12:04:49,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 12:04:49,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:49,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2075627621, now seen corresponding path program 1 times [2021-12-15 12:04:49,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:49,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467640567] [2021-12-15 12:04:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:49,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:49,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:49,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467640567] [2021-12-15 12:04:49,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467640567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:49,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:49,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:49,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918872373] [2021-12-15 12:04:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:49,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 12:04:49,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 12:04:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 12:04:49,973 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:55,916 INFO L93 Difference]: Finished difference Result 3098 states and 5867 transitions. [2021-12-15 12:04:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 12:04:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-12-15 12:04:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:55,926 INFO L225 Difference]: With dead ends: 3098 [2021-12-15 12:04:55,927 INFO L226 Difference]: Without dead ends: 2345 [2021-12-15 12:04:55,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 12:04:55,930 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 2423 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:55,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 812 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-15 12:04:55,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2021-12-15 12:04:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2345. [2021-12-15 12:04:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2343 states have (on average 1.5672215108834826) internal successors, (3672), 2344 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3672 transitions. [2021-12-15 12:04:56,013 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3672 transitions. Word has length 60 [2021-12-15 12:04:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,014 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 3672 transitions. [2021-12-15 12:04:56,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3672 transitions. [2021-12-15 12:04:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:56,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,020 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] [2021-12-15 12:04:56,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 12:04:56,020 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2021-12-15 12:04:56,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944771741] [2021-12-15 12:04:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:56,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:56,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944771741] [2021-12-15 12:04:56,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944771741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:56,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:56,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:56,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623620674] [2021-12-15 12:04:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:56,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:56,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:56,128 INFO L87 Difference]: Start difference. First operand 2345 states and 3672 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,168 INFO L93 Difference]: Finished difference Result 2443 states and 3826 transitions. [2021-12-15 12:04:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,178 INFO L225 Difference]: With dead ends: 2443 [2021-12-15 12:04:56,178 INFO L226 Difference]: Without dead ends: 2391 [2021-12-15 12:04:56,180 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 [2021-12-15 12:04:56,188 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-12-15 12:04:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2389. [2021-12-15 12:04:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 2387 states have (on average 1.5676581483033096) internal successors, (3742), 2388 states have internal predecessors, (3742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3742 transitions. [2021-12-15 12:04:56,245 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3742 transitions. Word has length 64 [2021-12-15 12:04:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,247 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 3742 transitions. [2021-12-15 12:04:56,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3742 transitions. [2021-12-15 12:04:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:56,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,250 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] [2021-12-15 12:04:56,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 12:04:56,251 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2021-12-15 12:04:56,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270602362] [2021-12-15 12:04:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:56,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:56,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270602362] [2021-12-15 12:04:56,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270602362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:56,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:56,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:56,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932494052] [2021-12-15 12:04:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:56,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:56,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:56,328 INFO L87 Difference]: Start difference. First operand 2389 states and 3742 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,357 INFO L93 Difference]: Finished difference Result 2569 states and 4026 transitions. [2021-12-15 12:04:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:56,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:56,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,368 INFO L225 Difference]: With dead ends: 2569 [2021-12-15 12:04:56,368 INFO L226 Difference]: Without dead ends: 2473 [2021-12-15 12:04:56,369 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 [2021-12-15 12:04:56,370 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-12-15 12:04:56,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2021-12-15 12:04:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.5678412312677197) internal successors, (3871), 2470 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3871 transitions. [2021-12-15 12:04:56,421 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3871 transitions. Word has length 64 [2021-12-15 12:04:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,421 INFO L470 AbstractCegarLoop]: Abstraction has 2471 states and 3871 transitions. [2021-12-15 12:04:56,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3871 transitions. [2021-12-15 12:04:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:56,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,423 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] [2021-12-15 12:04:56,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 12:04:56,423 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,424 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2021-12-15 12:04:56,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890170055] [2021-12-15 12:04:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:56,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:56,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890170055] [2021-12-15 12:04:56,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890170055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:56,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:56,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:56,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178287336] [2021-12-15 12:04:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:56,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:56,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:56,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:56,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:56,468 INFO L87 Difference]: Start difference. First operand 2471 states and 3871 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,500 INFO L93 Difference]: Finished difference Result 2803 states and 4393 transitions. [2021-12-15 12:04:56,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:56,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,511 INFO L225 Difference]: With dead ends: 2803 [2021-12-15 12:04:56,511 INFO L226 Difference]: Without dead ends: 2625 [2021-12-15 12:04:56,513 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 [2021-12-15 12:04:56,514 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2021-12-15 12:04:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2623. [2021-12-15 12:04:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2621 states have (on average 1.566959175887066) internal successors, (4107), 2622 states have internal predecessors, (4107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4107 transitions. [2021-12-15 12:04:56,570 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4107 transitions. Word has length 64 [2021-12-15 12:04:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,570 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 4107 transitions. [2021-12-15 12:04:56,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4107 transitions. [2021-12-15 12:04:56,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:56,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,571 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] [2021-12-15 12:04:56,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 12:04:56,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2021-12-15 12:04:56,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942587720] [2021-12-15 12:04:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:56,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:56,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942587720] [2021-12-15 12:04:56,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942587720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:56,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:56,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:56,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794560999] [2021-12-15 12:04:56,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:56,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:56,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:56,623 INFO L87 Difference]: Start difference. First operand 2623 states and 4107 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,662 INFO L93 Difference]: Finished difference Result 3235 states and 5061 transitions. [2021-12-15 12:04:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:56,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,675 INFO L225 Difference]: With dead ends: 3235 [2021-12-15 12:04:56,675 INFO L226 Difference]: Without dead ends: 2905 [2021-12-15 12:04:56,677 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 [2021-12-15 12:04:56,678 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2021-12-15 12:04:56,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2903. [2021-12-15 12:04:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2901 states have (on average 1.5632540503274732) internal successors, (4535), 2902 states have internal predecessors, (4535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4535 transitions. [2021-12-15 12:04:56,747 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4535 transitions. Word has length 64 [2021-12-15 12:04:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,747 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4535 transitions. [2021-12-15 12:04:56,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4535 transitions. [2021-12-15 12:04:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:56,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,748 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] [2021-12-15 12:04:56,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 12:04:56,749 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2021-12-15 12:04:56,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259659483] [2021-12-15 12:04:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:56,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:56,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259659483] [2021-12-15 12:04:56,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259659483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:56,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:56,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:56,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706526486] [2021-12-15 12:04:56,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:56,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:56,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:56,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:56,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:56,813 INFO L87 Difference]: Start difference. First operand 2903 states and 4535 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:56,866 INFO L93 Difference]: Finished difference Result 4027 states and 6265 transitions. [2021-12-15 12:04:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:56,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:56,880 INFO L225 Difference]: With dead ends: 4027 [2021-12-15 12:04:56,881 INFO L226 Difference]: Without dead ends: 3417 [2021-12-15 12:04:56,883 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 [2021-12-15 12:04:56,884 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:56,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2021-12-15 12:04:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3415. [2021-12-15 12:04:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3413 states have (on average 1.553765016114855) internal successors, (5303), 3414 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 5303 transitions. [2021-12-15 12:04:56,981 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 5303 transitions. Word has length 64 [2021-12-15 12:04:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:56,982 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 5303 transitions. [2021-12-15 12:04:56,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 5303 transitions. [2021-12-15 12:04:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:04:56,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:56,987 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] [2021-12-15 12:04:56,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 12:04:56,987 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2021-12-15 12:04:56,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:56,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707364888] [2021-12-15 12:04:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:56,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:57,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:57,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707364888] [2021-12-15 12:04:57,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707364888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:57,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:57,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:04:57,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370540735] [2021-12-15 12:04:57,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:57,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:04:57,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:04:57,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:04:57,072 INFO L87 Difference]: Start difference. First operand 3415 states and 5303 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:57,574 INFO L93 Difference]: Finished difference Result 14635 states and 22433 transitions. [2021-12-15 12:04:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 12:04:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-15 12:04:57,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:57,622 INFO L225 Difference]: With dead ends: 14635 [2021-12-15 12:04:57,623 INFO L226 Difference]: Without dead ends: 13513 [2021-12-15 12:04:57,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-15 12:04:57,632 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:57,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:04:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13513 states. [2021-12-15 12:04:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13513 to 4535. [2021-12-15 12:04:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.5334215751158173) internal successors, (6951), 4534 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6951 transitions. [2021-12-15 12:04:57,901 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6951 transitions. Word has length 64 [2021-12-15 12:04:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:57,902 INFO L470 AbstractCegarLoop]: Abstraction has 4535 states and 6951 transitions. [2021-12-15 12:04:57,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:57,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6951 transitions. [2021-12-15 12:04:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 12:04:57,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:57,903 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] [2021-12-15 12:04:57,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 12:04:57,907 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2021-12-15 12:04:57,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134631569] [2021-12-15 12:04:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:57,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:57,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:57,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134631569] [2021-12-15 12:04:57,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134631569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:57,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:57,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:04:57,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127570274] [2021-12-15 12:04:57,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:57,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:04:57,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:04:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:04:57,961 INFO L87 Difference]: Start difference. First operand 4535 states and 6951 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:58,118 INFO L93 Difference]: Finished difference Result 7821 states and 11867 transitions. [2021-12-15 12:04:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:04:58,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-15 12:04:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:58,131 INFO L225 Difference]: With dead ends: 7821 [2021-12-15 12:04:58,131 INFO L226 Difference]: Without dead ends: 5579 [2021-12-15 12:04:58,136 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 [2021-12-15 12:04:58,137 INFO L933 BasicCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:58,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-12-15 12:04:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2021-12-15 12:04:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.51695067264574) internal successors, (8457), 5576 states have internal predecessors, (8457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8457 transitions. [2021-12-15 12:04:58,351 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8457 transitions. Word has length 66 [2021-12-15 12:04:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:58,351 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8457 transitions. [2021-12-15 12:04:58,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8457 transitions. [2021-12-15 12:04:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 12:04:58,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:58,353 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] [2021-12-15 12:04:58,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 12:04:58,354 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2021-12-15 12:04:58,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:58,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84832285] [2021-12-15 12:04:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:58,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:58,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:58,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84832285] [2021-12-15 12:04:58,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84832285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:58,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:58,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:04:58,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286792480] [2021-12-15 12:04:58,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:58,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:04:58,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:04:58,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:04:58,538 INFO L87 Difference]: Start difference. First operand 5577 states and 8457 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:58,816 INFO L93 Difference]: Finished difference Result 8861 states and 13323 transitions. [2021-12-15 12:04:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:04:58,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-15 12:04:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:58,830 INFO L225 Difference]: With dead ends: 8861 [2021-12-15 12:04:58,830 INFO L226 Difference]: Without dead ends: 5579 [2021-12-15 12:04:58,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-15 12:04:58,840 INFO L933 BasicCegarLoop]: 1551 mSDtfsCounter, 4654 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:58,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 1867 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:04:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-12-15 12:04:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2021-12-15 12:04:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.5083408071748878) internal successors, (8409), 5576 states have internal predecessors, (8409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8409 transitions. [2021-12-15 12:04:59,080 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8409 transitions. Word has length 66 [2021-12-15 12:04:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:59,081 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8409 transitions. [2021-12-15 12:04:59,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8409 transitions. [2021-12-15 12:04:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:04:59,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:59,083 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] [2021-12-15 12:04:59,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 12:04:59,084 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2021-12-15 12:04:59,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:59,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673685930] [2021-12-15 12:04:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:59,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:59,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:59,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673685930] [2021-12-15 12:04:59,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673685930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:59,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:59,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:04:59,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438012602] [2021-12-15 12:04:59,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:59,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:04:59,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:04:59,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:04:59,167 INFO L87 Difference]: Start difference. First operand 5577 states and 8409 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:59,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:59,418 INFO L93 Difference]: Finished difference Result 8859 states and 13226 transitions. [2021-12-15 12:04:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:04:59,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:04:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:59,430 INFO L225 Difference]: With dead ends: 8859 [2021-12-15 12:04:59,431 INFO L226 Difference]: Without dead ends: 5577 [2021-12-15 12:04:59,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:04:59,438 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 4687 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:59,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4687 Valid, 3007 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:04:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2021-12-15 12:04:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2021-12-15 12:04:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.4997309417040359) internal successors, (8361), 5576 states have internal predecessors, (8361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8361 transitions. [2021-12-15 12:04:59,627 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8361 transitions. Word has length 67 [2021-12-15 12:04:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:04:59,627 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8361 transitions. [2021-12-15 12:04:59,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:59,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8361 transitions. [2021-12-15 12:04:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:04:59,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:04:59,629 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] [2021-12-15 12:04:59,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 12:04:59,629 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:04:59,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:04:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2021-12-15 12:04:59,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:04:59,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232518202] [2021-12-15 12:04:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:04:59,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:04:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:04:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:04:59,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:04:59,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232518202] [2021-12-15 12:04:59,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232518202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:04:59,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:04:59,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:04:59,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800185214] [2021-12-15 12:04:59,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:04:59,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:04:59,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:04:59,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:04:59,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:04:59,693 INFO L87 Difference]: Start difference. First operand 5577 states and 8361 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:04:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:04:59,935 INFO L93 Difference]: Finished difference Result 8859 states and 13130 transitions. [2021-12-15 12:04:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:04:59,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:04:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:04:59,948 INFO L225 Difference]: With dead ends: 8859 [2021-12-15 12:04:59,948 INFO L226 Difference]: Without dead ends: 5577 [2021-12-15 12:04:59,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:04:59,957 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 4660 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:04:59,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4660 Valid, 3023 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:04:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2021-12-15 12:05:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2021-12-15 12:05:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5575 states have (on average 1.491121076233184) internal successors, (8313), 5576 states have internal predecessors, (8313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8313 transitions. [2021-12-15 12:05:00,197 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8313 transitions. Word has length 67 [2021-12-15 12:05:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:00,197 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8313 transitions. [2021-12-15 12:05:00,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8313 transitions. [2021-12-15 12:05:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:05:00,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:00,199 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] [2021-12-15 12:05:00,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 12:05:00,199 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2021-12-15 12:05:00,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:00,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929974025] [2021-12-15 12:05:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:00,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:00,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:00,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929974025] [2021-12-15 12:05:00,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929974025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:00,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:00,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 12:05:00,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170930729] [2021-12-15 12:05:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:00,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 12:05:00,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:00,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 12:05:00,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-15 12:05:00,289 INFO L87 Difference]: Start difference. First operand 5577 states and 8313 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:00,691 INFO L93 Difference]: Finished difference Result 8420 states and 12287 transitions. [2021-12-15 12:05:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 12:05:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:05:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:00,709 INFO L225 Difference]: With dead ends: 8420 [2021-12-15 12:05:00,710 INFO L226 Difference]: Without dead ends: 8418 [2021-12-15 12:05:00,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 12:05:00,714 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 616 mSDsluCounter, 9065 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 10643 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:00,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 10643 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:05:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2021-12-15 12:05:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 5769. [2021-12-15 12:05:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5767 states have (on average 1.4719958383908445) internal successors, (8489), 5768 states have internal predecessors, (8489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 8489 transitions. [2021-12-15 12:05:00,957 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 8489 transitions. Word has length 67 [2021-12-15 12:05:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:00,958 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 8489 transitions. [2021-12-15 12:05:00,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 8489 transitions. [2021-12-15 12:05:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:00,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:00,961 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:05:00,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 12:05:00,962 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2021-12-15 12:05:00,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:00,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082097561] [2021-12-15 12:05:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:00,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-15 12:05:01,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:01,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082097561] [2021-12-15 12:05:01,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082097561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:01,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:01,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:01,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974041804] [2021-12-15 12:05:01,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:01,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:01,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:01,041 INFO L87 Difference]: Start difference. First operand 5769 states and 8489 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:01,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:01,807 INFO L93 Difference]: Finished difference Result 23845 states and 33919 transitions. [2021-12-15 12:05:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:01,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:01,857 INFO L225 Difference]: With dead ends: 23845 [2021-12-15 12:05:01,857 INFO L226 Difference]: Without dead ends: 20371 [2021-12-15 12:05:01,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:01,871 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6581 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6581 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:01,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6581 Valid, 3534 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:05:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2021-12-15 12:05:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 9241. [2021-12-15 12:05:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.443554497239961) internal successors, (13337), 9240 states have internal predecessors, (13337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13337 transitions. [2021-12-15 12:05:02,444 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13337 transitions. Word has length 95 [2021-12-15 12:05:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:02,445 INFO L470 AbstractCegarLoop]: Abstraction has 9241 states and 13337 transitions. [2021-12-15 12:05:02,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13337 transitions. [2021-12-15 12:05:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:02,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:02,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:05:02,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 12:05:02,450 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2021-12-15 12:05:02,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:02,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331593181] [2021-12-15 12:05:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:02,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-15 12:05:02,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331593181] [2021-12-15 12:05:02,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331593181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:02,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:02,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:02,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495845878] [2021-12-15 12:05:02,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:02,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:02,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:02,520 INFO L87 Difference]: Start difference. First operand 9241 states and 13337 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:03,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:03,468 INFO L93 Difference]: Finished difference Result 27317 states and 38767 transitions. [2021-12-15 12:05:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:03,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:03,514 INFO L225 Difference]: With dead ends: 27317 [2021-12-15 12:05:03,514 INFO L226 Difference]: Without dead ends: 23843 [2021-12-15 12:05:03,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:03,528 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6480 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:03,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6480 Valid, 3582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:05:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23843 states. [2021-12-15 12:05:04,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23843 to 14457. [2021-12-15 12:05:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14455 states have (on average 1.4229678312002767) internal successors, (20569), 14456 states have internal predecessors, (20569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20569 transitions. [2021-12-15 12:05:04,401 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20569 transitions. Word has length 95 [2021-12-15 12:05:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:04,401 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 20569 transitions. [2021-12-15 12:05:04,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20569 transitions. [2021-12-15 12:05:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:04,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:04,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:05:04,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 12:05:04,407 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2021-12-15 12:05:04,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:04,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122441217] [2021-12-15 12:05:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:04,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 12:05:04,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122441217] [2021-12-15 12:05:04,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122441217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:04,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:04,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:04,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922685702] [2021-12-15 12:05:04,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:04,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:04,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:04,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:04,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:04,482 INFO L87 Difference]: Start difference. First operand 14457 states and 20569 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:05,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:05,523 INFO L93 Difference]: Finished difference Result 30789 states and 43615 transitions. [2021-12-15 12:05:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:05,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:05,572 INFO L225 Difference]: With dead ends: 30789 [2021-12-15 12:05:05,573 INFO L226 Difference]: Without dead ends: 27315 [2021-12-15 12:05:05,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:05,588 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6492 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6492 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:05,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6492 Valid, 3626 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:05:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2021-12-15 12:05:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 17929. [2021-12-15 12:05:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 17927 states have (on average 1.417805544709098) internal successors, (25417), 17928 states have internal predecessors, (25417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25417 transitions. [2021-12-15 12:05:06,723 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25417 transitions. Word has length 95 [2021-12-15 12:05:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:06,723 INFO L470 AbstractCegarLoop]: Abstraction has 17929 states and 25417 transitions. [2021-12-15 12:05:06,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25417 transitions. [2021-12-15 12:05:06,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:06,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:06,729 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:05:06,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 12:05:06,730 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2021-12-15 12:05:06,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:06,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283069040] [2021-12-15 12:05:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:06,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 12:05:06,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:06,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283069040] [2021-12-15 12:05:06,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283069040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:06,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:06,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:06,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430169694] [2021-12-15 12:05:06,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:06,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:06,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:06,797 INFO L87 Difference]: Start difference. First operand 17929 states and 25417 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:07,979 INFO L93 Difference]: Finished difference Result 34261 states and 48463 transitions. [2021-12-15 12:05:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:07,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:08,026 INFO L225 Difference]: With dead ends: 34261 [2021-12-15 12:05:08,026 INFO L226 Difference]: Without dead ends: 30787 [2021-12-15 12:05:08,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:08,043 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 6560 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:08,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6560 Valid, 3630 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:05:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2021-12-15 12:05:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 21401. [2021-12-15 12:05:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21399 states have (on average 1.4143184260946773) internal successors, (30265), 21400 states have internal predecessors, (30265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 30265 transitions. [2021-12-15 12:05:09,126 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 30265 transitions. Word has length 95 [2021-12-15 12:05:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:09,126 INFO L470 AbstractCegarLoop]: Abstraction has 21401 states and 30265 transitions. [2021-12-15 12:05:09,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 30265 transitions. [2021-12-15 12:05:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:05:09,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:09,132 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:05:09,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 12:05:09,133 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2021-12-15 12:05:09,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:09,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583179399] [2021-12-15 12:05:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:09,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 12:05:09,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:09,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583179399] [2021-12-15 12:05:09,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583179399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:05:09,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:05:09,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:05:09,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110286008] [2021-12-15 12:05:09,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:05:09,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:05:09,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:09,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:05:09,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:05:09,194 INFO L87 Difference]: Start difference. First operand 21401 states and 30265 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:10,620 INFO L93 Difference]: Finished difference Result 35653 states and 50431 transitions. [2021-12-15 12:05:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:05:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-15 12:05:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:10,668 INFO L225 Difference]: With dead ends: 35653 [2021-12-15 12:05:10,668 INFO L226 Difference]: Without dead ends: 33219 [2021-12-15 12:05:10,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 12:05:10,682 INFO L933 BasicCegarLoop]: 1624 mSDtfsCounter, 6561 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:10,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 3543 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:05:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2021-12-15 12:05:12,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23833. [2021-12-15 12:05:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23833 states, 23831 states have (on average 1.4136628760857706) internal successors, (33689), 23832 states have internal predecessors, (33689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23833 states to 23833 states and 33689 transitions. [2021-12-15 12:05:12,187 INFO L78 Accepts]: Start accepts. Automaton has 23833 states and 33689 transitions. Word has length 95 [2021-12-15 12:05:12,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:05:12,187 INFO L470 AbstractCegarLoop]: Abstraction has 23833 states and 33689 transitions. [2021-12-15 12:05:12,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 23833 states and 33689 transitions. [2021-12-15 12:05:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 12:05:12,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:05:12,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:05:12,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 12:05:12,195 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:05:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:05:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2021-12-15 12:05:12,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:05:12,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372912484] [2021-12-15 12:05:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:12,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:05:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:12,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:05:12,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372912484] [2021-12-15 12:05:12,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372912484] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 12:05:12,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817009069] [2021-12-15 12:05:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:05:12,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 12:05:12,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:05:12,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 12:05:12,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 12:05:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:05:12,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-15 12:05:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 12:05:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:12,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 12:05:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:05:13,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817009069] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 12:05:13,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 12:05:13,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 23 [2021-12-15 12:05:13,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745556767] [2021-12-15 12:05:13,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 12:05:13,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-15 12:05:13,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:05:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-15 12:05:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-12-15 12:05:13,546 INFO L87 Difference]: Start difference. First operand 23833 states and 33689 transitions. Second operand has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:05:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:05:37,052 INFO L93 Difference]: Finished difference Result 299379 states and 415318 transitions. [2021-12-15 12:05:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2021-12-15 12:05:37,052 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-15 12:05:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:05:37,711 INFO L225 Difference]: With dead ends: 299379 [2021-12-15 12:05:37,711 INFO L226 Difference]: Without dead ends: 275685 [2021-12-15 12:05:37,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23345 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7066, Invalid=45604, Unknown=0, NotChecked=0, Total=52670 [2021-12-15 12:05:37,812 INFO L933 BasicCegarLoop]: 1763 mSDtfsCounter, 17646 mSDsluCounter, 11565 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17646 SdHoareTripleChecker+Valid, 13328 SdHoareTripleChecker+Invalid, 5356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-15 12:05:37,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17646 Valid, 13328 Invalid, 5356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 4792 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]