./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.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_overflow.ufo.UNBOUNDED.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 856625535901356ddeabfd0af746b720baf6ff17e69ade88869f423ab6af45bb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:06:54,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:06:54,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:06:54,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:06:54,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:06:54,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:06:54,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:06:54,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:06:54,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:06:54,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:06:54,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:06:54,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:06:54,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:06:54,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:06:54,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:06:54,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:06:54,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:06:54,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:06:54,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:06:54,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:06:54,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:06:54,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:06:54,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:06:54,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:06:54,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:06:54,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:06:54,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:06:54,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:06:54,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:06:54,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:06:54,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:06:54,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:06:54,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:06:54,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:06:54,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:06:54,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:06:54,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:06:54,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:06:54,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:06:54,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:06:54,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:06:54,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:06:55,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:06:55,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:06:55,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:06:55,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:06:55,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:06:55,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:06:55,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:06:55,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:06:55,028 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:06:55,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:06:55,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:06:55,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:06:55,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:06:55,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:06:55,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:06:55,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:06:55,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:06:55,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:06:55,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:06:55,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:06:55,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:06:55,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:06:55,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:06:55,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:06:55,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:06:55,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:06:55,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:06:55,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:06:55,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:06:55,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:06:55,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:06:55,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:06:55,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:06:55,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:06:55,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 856625535901356ddeabfd0af746b720baf6ff17e69ade88869f423ab6af45bb [2021-12-15 12:06:55,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:06:55,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:06:55,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:06:55,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:06:55,246 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:06:55,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-15 12:06:55,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32150a1f3/632e5231332f4afe8298e566f15fbbcb/FLAG801636d84 [2021-12-15 12:06:55,859 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:06:55,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-15 12:06:55,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32150a1f3/632e5231332f4afe8298e566f15fbbcb/FLAG801636d84 [2021-12-15 12:06:56,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32150a1f3/632e5231332f4afe8298e566f15fbbcb [2021-12-15 12:06:56,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:06:56,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:06:56,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:06:56,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:06:56,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:06:56,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:06:56" (1/1) ... [2021-12-15 12:06:56,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f0cbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:56, skipping insertion in model container [2021-12-15 12:06:56,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:06:56" (1/1) ... [2021-12-15 12:06:56,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:06:56,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:06:56,454 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[11742,11755] [2021-12-15 12:06:56,488 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[18678,18691] [2021-12-15 12:06:56,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:06:57,006 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:06:57,051 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[11742,11755] [2021-12-15 12:06:57,060 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[18678,18691] [2021-12-15 12:06:57,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:06:57,392 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:06:57,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57 WrapperNode [2021-12-15 12:06:57,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:06:57,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:06:57,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:06:57,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:06:57,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,668 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5086 [2021-12-15 12:06:57,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:06:57,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:06:57,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:06:57,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:06:57,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:57,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:58,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:06:58,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:06:58,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:06:58,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:06:58,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (1/1) ... [2021-12-15 12:06:58,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:06:58,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:06:58,063 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 12:06:58,076 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 12:06:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:06:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:06:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:06:58,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:06:58,314 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:06:58,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:07:00,965 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:07:00,976 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:07:00,976 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 12:07:00,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:07:00 BoogieIcfgContainer [2021-12-15 12:07:00,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:07:00,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:07:00,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:07:00,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:07:00,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:06:56" (1/3) ... [2021-12-15 12:07:00,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716481d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:07:00, skipping insertion in model container [2021-12-15 12:07:00,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:06:57" (2/3) ... [2021-12-15 12:07:00,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716481d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:07:00, skipping insertion in model container [2021-12-15 12:07:00,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:07:00" (3/3) ... [2021-12-15 12:07:00,984 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-15 12:07:00,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:07:00,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:07:01,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:07:01,025 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 12:07:01,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:07:01,046 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 12:07:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 12:07:01,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:01,052 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 12:07:01,053 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2021-12-15 12:07:01,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:01,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487897211] [2021-12-15 12:07:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:01,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:01,245 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 12:07:01,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:01,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487897211] [2021-12-15 12:07:01,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487897211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:01,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:01,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:07:01,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439296259] [2021-12-15 12:07:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:01,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 12:07:01,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 12:07:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:07:01,279 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 12:07:01,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:01,346 INFO L93 Difference]: Finished difference Result 1779 states and 3372 transitions. [2021-12-15 12:07:01,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 12:07:01,348 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 12:07:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:01,364 INFO L225 Difference]: With dead ends: 1779 [2021-12-15 12:07:01,365 INFO L226 Difference]: Without dead ends: 843 [2021-12-15 12:07:01,371 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 12:07:01,374 INFO L933 BasicCegarLoop]: 1653 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, 1653 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 12:07:01,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:07:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-15 12:07:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-12-15 12:07:01,434 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 12:07:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2021-12-15 12:07:01,437 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2021-12-15 12:07:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:01,437 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2021-12-15 12:07:01,437 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 12:07:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2021-12-15 12:07:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 12:07:01,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:01,439 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 12:07:01,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:07:01,439 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:01,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2021-12-15 12:07:01,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:01,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556554448] [2021-12-15 12:07:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:01,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:01,517 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 12:07:01,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:01,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556554448] [2021-12-15 12:07:01,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556554448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:01,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:01,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:07:01,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971616500] [2021-12-15 12:07:01,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:01,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 12:07:01,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 12:07:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 12:07:01,520 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 12:07:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:01,595 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2021-12-15 12:07:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 12:07:01,596 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 12:07:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:01,599 INFO L225 Difference]: With dead ends: 899 [2021-12-15 12:07:01,599 INFO L226 Difference]: Without dead ends: 843 [2021-12-15 12:07:01,602 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 12:07:01,603 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 12:07:01,604 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 12:07:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-12-15 12:07:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2021-12-15 12:07:01,620 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 12:07:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2021-12-15 12:07:01,630 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2021-12-15 12:07:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:01,631 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2021-12-15 12:07:01,631 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 12:07:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2021-12-15 12:07:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-15 12:07:01,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:01,633 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 12:07:01,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 12:07:01,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2075627621, now seen corresponding path program 1 times [2021-12-15 12:07:01,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:01,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886679733] [2021-12-15 12:07:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:01,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:01,760 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 12:07:01,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:01,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886679733] [2021-12-15 12:07:01,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886679733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:01,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:01,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:07:01,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761789012] [2021-12-15 12:07:01,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:01,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 12:07:01,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:01,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 12:07:01,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 12:07:01,764 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 12:07:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:06,787 INFO L93 Difference]: Finished difference Result 3098 states and 5867 transitions. [2021-12-15 12:07:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 12:07:06,796 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 12:07:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:06,806 INFO L225 Difference]: With dead ends: 3098 [2021-12-15 12:07:06,806 INFO L226 Difference]: Without dead ends: 2345 [2021-12-15 12:07:06,807 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 12:07:06,808 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 2423 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.9s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:06,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 812 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-15 12:07:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2021-12-15 12:07:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2345. [2021-12-15 12:07:06,840 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 12:07:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3672 transitions. [2021-12-15 12:07:06,846 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3672 transitions. Word has length 60 [2021-12-15 12:07:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:06,846 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 3672 transitions. [2021-12-15 12:07:06,847 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 12:07:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3672 transitions. [2021-12-15 12:07:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:07:06,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:06,848 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 12:07:06,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 12:07:06,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:06,849 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2021-12-15 12:07:06,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:06,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244725576] [2021-12-15 12:07:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:06,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:06,909 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 12:07:06,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:06,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244725576] [2021-12-15 12:07:06,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244725576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:06,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:06,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:07:06,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983585084] [2021-12-15 12:07:06,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:06,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:07:06,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:07:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:07:06,911 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 12:07:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:06,935 INFO L93 Difference]: Finished difference Result 2443 states and 3826 transitions. [2021-12-15 12:07:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:07:06,935 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 12:07:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:06,943 INFO L225 Difference]: With dead ends: 2443 [2021-12-15 12:07:06,943 INFO L226 Difference]: Without dead ends: 2391 [2021-12-15 12:07:06,944 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 12:07:06,945 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 12:07:06,945 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 12:07:06,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-12-15 12:07:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2389. [2021-12-15 12:07:06,976 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 12:07:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3742 transitions. [2021-12-15 12:07:06,982 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3742 transitions. Word has length 64 [2021-12-15 12:07:06,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:06,983 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 3742 transitions. [2021-12-15 12:07:06,983 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 12:07:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3742 transitions. [2021-12-15 12:07:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:07:06,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:06,985 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 12:07:06,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 12:07:06,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2021-12-15 12:07:06,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:06,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346796439] [2021-12-15 12:07:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:06,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:07,026 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 12:07:07,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:07,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346796439] [2021-12-15 12:07:07,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346796439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:07,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:07,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:07:07,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679795373] [2021-12-15 12:07:07,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:07,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:07:07,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:07,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:07:07,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:07:07,028 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 12:07:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:07,054 INFO L93 Difference]: Finished difference Result 2569 states and 4026 transitions. [2021-12-15 12:07:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:07:07,055 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 12:07:07,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:07,063 INFO L225 Difference]: With dead ends: 2569 [2021-12-15 12:07:07,063 INFO L226 Difference]: Without dead ends: 2473 [2021-12-15 12:07:07,064 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 12:07:07,065 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 12:07:07,065 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 12:07:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-12-15 12:07:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2021-12-15 12:07:07,101 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 12:07:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3871 transitions. [2021-12-15 12:07:07,108 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3871 transitions. Word has length 64 [2021-12-15 12:07:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:07,109 INFO L470 AbstractCegarLoop]: Abstraction has 2471 states and 3871 transitions. [2021-12-15 12:07:07,109 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 12:07:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3871 transitions. [2021-12-15 12:07:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:07:07,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:07,110 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 12:07:07,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 12:07:07,111 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2021-12-15 12:07:07,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:07,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207397292] [2021-12-15 12:07:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:07,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:07,153 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 12:07:07,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:07,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207397292] [2021-12-15 12:07:07,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207397292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:07,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:07,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:07:07,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664204714] [2021-12-15 12:07:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:07,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:07:07,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:07:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:07:07,157 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 12:07:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:07,193 INFO L93 Difference]: Finished difference Result 2803 states and 4393 transitions. [2021-12-15 12:07:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:07:07,194 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 12:07:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:07,202 INFO L225 Difference]: With dead ends: 2803 [2021-12-15 12:07:07,203 INFO L226 Difference]: Without dead ends: 2625 [2021-12-15 12:07:07,204 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 12:07:07,206 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 12:07:07,207 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 12:07:07,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2021-12-15 12:07:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2623. [2021-12-15 12:07:07,244 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 12:07:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4107 transitions. [2021-12-15 12:07:07,250 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4107 transitions. Word has length 64 [2021-12-15 12:07:07,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:07,250 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 4107 transitions. [2021-12-15 12:07:07,251 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 12:07:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4107 transitions. [2021-12-15 12:07:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:07:07,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:07,251 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 12:07:07,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 12:07:07,252 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2021-12-15 12:07:07,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:07,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96912820] [2021-12-15 12:07:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:07,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:07,281 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 12:07:07,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:07,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96912820] [2021-12-15 12:07:07,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96912820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:07,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:07,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:07:07,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887364897] [2021-12-15 12:07:07,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:07,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:07:07,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:07:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:07:07,283 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 12:07:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:07,317 INFO L93 Difference]: Finished difference Result 3235 states and 5061 transitions. [2021-12-15 12:07:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:07:07,318 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 12:07:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:07,327 INFO L225 Difference]: With dead ends: 3235 [2021-12-15 12:07:07,327 INFO L226 Difference]: Without dead ends: 2905 [2021-12-15 12:07:07,330 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 12:07:07,333 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 12:07:07,333 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 12:07:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2021-12-15 12:07:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2903. [2021-12-15 12:07:07,380 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 12:07:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4535 transitions. [2021-12-15 12:07:07,386 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4535 transitions. Word has length 64 [2021-12-15 12:07:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:07,387 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4535 transitions. [2021-12-15 12:07:07,388 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 12:07:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4535 transitions. [2021-12-15 12:07:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:07:07,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:07,389 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 12:07:07,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 12:07:07,389 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2021-12-15 12:07:07,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062119088] [2021-12-15 12:07:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:07,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:07,444 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 12:07:07,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:07,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062119088] [2021-12-15 12:07:07,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062119088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:07,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:07,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:07:07,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504070650] [2021-12-15 12:07:07,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:07,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:07:07,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:07:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:07:07,447 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 12:07:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:07,515 INFO L93 Difference]: Finished difference Result 4027 states and 6265 transitions. [2021-12-15 12:07:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:07:07,516 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 12:07:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:07,525 INFO L225 Difference]: With dead ends: 4027 [2021-12-15 12:07:07,526 INFO L226 Difference]: Without dead ends: 3417 [2021-12-15 12:07:07,527 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 12:07:07,528 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 12:07:07,528 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 12:07:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2021-12-15 12:07:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3415. [2021-12-15 12:07:07,592 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 12:07:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 5303 transitions. [2021-12-15 12:07:07,599 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 5303 transitions. Word has length 64 [2021-12-15 12:07:07,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:07,599 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 5303 transitions. [2021-12-15 12:07:07,599 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 12:07:07,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 5303 transitions. [2021-12-15 12:07:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 12:07:07,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:07,600 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 12:07:07,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 12:07:07,601 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2021-12-15 12:07:07,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:07,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048810852] [2021-12-15 12:07:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:07,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:07,646 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 12:07:07,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:07,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048810852] [2021-12-15 12:07:07,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048810852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:07,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:07,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:07:07,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348071260] [2021-12-15 12:07:07,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:07,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:07:07,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:07,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:07:07,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:07:07,648 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 12:07:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:08,008 INFO L93 Difference]: Finished difference Result 14635 states and 22433 transitions. [2021-12-15 12:07:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 12:07:08,009 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 12:07:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:08,055 INFO L225 Difference]: With dead ends: 14635 [2021-12-15 12:07:08,055 INFO L226 Difference]: Without dead ends: 13513 [2021-12-15 12:07:08,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-15 12:07:08,065 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 12:07:08,065 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 12:07:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13513 states. [2021-12-15 12:07:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13513 to 4535. [2021-12-15 12:07:08,243 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 12:07:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6951 transitions. [2021-12-15 12:07:08,252 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6951 transitions. Word has length 64 [2021-12-15 12:07:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:08,252 INFO L470 AbstractCegarLoop]: Abstraction has 4535 states and 6951 transitions. [2021-12-15 12:07:08,252 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 12:07:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6951 transitions. [2021-12-15 12:07:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 12:07:08,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:08,257 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 12:07:08,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 12:07:08,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:08,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2021-12-15 12:07:08,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:08,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100384021] [2021-12-15 12:07:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:08,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:08,298 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 12:07:08,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:08,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100384021] [2021-12-15 12:07:08,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100384021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:08,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:08,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:07:08,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710267318] [2021-12-15 12:07:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:08,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:07:08,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:07:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:07:08,301 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 12:07:08,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:08,452 INFO L93 Difference]: Finished difference Result 7821 states and 11867 transitions. [2021-12-15 12:07:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:07:08,453 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 12:07:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:08,461 INFO L225 Difference]: With dead ends: 7821 [2021-12-15 12:07:08,462 INFO L226 Difference]: Without dead ends: 5579 [2021-12-15 12:07:08,465 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 12:07:08,465 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 12:07:08,466 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 12:07:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-12-15 12:07:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2021-12-15 12:07:08,597 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 12:07:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8457 transitions. [2021-12-15 12:07:08,608 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8457 transitions. Word has length 66 [2021-12-15 12:07:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:08,609 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8457 transitions. [2021-12-15 12:07:08,609 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 12:07:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8457 transitions. [2021-12-15 12:07:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 12:07:08,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:08,610 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 12:07:08,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 12:07:08,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2021-12-15 12:07:08,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:08,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040056177] [2021-12-15 12:07:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:08,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:08,748 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 12:07:08,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:08,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040056177] [2021-12-15 12:07:08,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040056177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:08,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:08,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:07:08,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494864620] [2021-12-15 12:07:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:08,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:07:08,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:07:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:07:08,751 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 12:07:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:08,957 INFO L93 Difference]: Finished difference Result 8861 states and 13323 transitions. [2021-12-15 12:07:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:07:08,958 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 12:07:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:08,967 INFO L225 Difference]: With dead ends: 8861 [2021-12-15 12:07:08,967 INFO L226 Difference]: Without dead ends: 5579 [2021-12-15 12:07:08,973 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 12:07:08,973 INFO L933 BasicCegarLoop]: 1551 mSDtfsCounter, 3164 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:08,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 1867 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:07:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-12-15 12:07:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5577. [2021-12-15 12:07:09,107 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 12:07:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8409 transitions. [2021-12-15 12:07:09,118 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8409 transitions. Word has length 66 [2021-12-15 12:07:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:09,118 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8409 transitions. [2021-12-15 12:07:09,119 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 12:07:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8409 transitions. [2021-12-15 12:07:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:07:09,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:09,119 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 12:07:09,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 12:07:09,120 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2021-12-15 12:07:09,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:09,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976782203] [2021-12-15 12:07:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:09,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:09,191 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 12:07:09,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:09,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976782203] [2021-12-15 12:07:09,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976782203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:09,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:09,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:07:09,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213229437] [2021-12-15 12:07:09,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:09,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:07:09,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:09,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:07:09,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:07:09,193 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 12:07:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:09,412 INFO L93 Difference]: Finished difference Result 8859 states and 13226 transitions. [2021-12-15 12:07:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:07:09,413 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 12:07:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:09,423 INFO L225 Difference]: With dead ends: 8859 [2021-12-15 12:07:09,423 INFO L226 Difference]: Without dead ends: 5577 [2021-12-15 12:07:09,428 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 12:07:09,429 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 4627 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:09,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4627 Valid, 3022 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:07:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2021-12-15 12:07:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2021-12-15 12:07:09,598 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 12:07:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8361 transitions. [2021-12-15 12:07:09,608 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8361 transitions. Word has length 67 [2021-12-15 12:07:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:09,608 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8361 transitions. [2021-12-15 12:07:09,608 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 12:07:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8361 transitions. [2021-12-15 12:07:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:07:09,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:09,609 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 12:07:09,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 12:07:09,610 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2021-12-15 12:07:09,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:09,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288698299] [2021-12-15 12:07:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:09,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:09,651 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 12:07:09,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:09,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288698299] [2021-12-15 12:07:09,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288698299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:09,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:09,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:07:09,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572697176] [2021-12-15 12:07:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:09,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:07:09,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:07:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:07:09,654 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 12:07:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:09,842 INFO L93 Difference]: Finished difference Result 8859 states and 13130 transitions. [2021-12-15 12:07:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:07:09,843 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 12:07:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:09,851 INFO L225 Difference]: With dead ends: 8859 [2021-12-15 12:07:09,851 INFO L226 Difference]: Without dead ends: 5577 [2021-12-15 12:07:09,856 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 12:07:09,857 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 4719 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4719 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:09,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4719 Valid, 3012 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:07:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2021-12-15 12:07:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5577. [2021-12-15 12:07:09,994 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 12:07:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8313 transitions. [2021-12-15 12:07:10,003 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8313 transitions. Word has length 67 [2021-12-15 12:07:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:10,003 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 8313 transitions. [2021-12-15 12:07:10,003 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 12:07:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8313 transitions. [2021-12-15 12:07:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:07:10,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:10,004 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 12:07:10,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 12:07:10,005 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2021-12-15 12:07:10,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:10,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580541106] [2021-12-15 12:07:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:10,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:10,063 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 12:07:10,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:10,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580541106] [2021-12-15 12:07:10,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580541106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:10,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:10,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 12:07:10,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712607215] [2021-12-15 12:07:10,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:10,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 12:07:10,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:10,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 12:07:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-15 12:07:10,066 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 12:07:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:10,380 INFO L93 Difference]: Finished difference Result 8420 states and 12287 transitions. [2021-12-15 12:07:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 12:07:10,381 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 12:07:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:10,395 INFO L225 Difference]: With dead ends: 8420 [2021-12-15 12:07:10,395 INFO L226 Difference]: Without dead ends: 8418 [2021-12-15 12:07:10,398 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 12:07:10,398 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 12:07:10,399 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 12:07:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2021-12-15 12:07:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 5769. [2021-12-15 12:07:10,574 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 12:07:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 8489 transitions. [2021-12-15 12:07:10,581 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 8489 transitions. Word has length 67 [2021-12-15 12:07:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:10,582 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 8489 transitions. [2021-12-15 12:07:10,582 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 12:07:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 8489 transitions. [2021-12-15 12:07:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:07:10,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:10,584 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 12:07:10,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 12:07:10,585 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2021-12-15 12:07:10,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:10,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144567901] [2021-12-15 12:07:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:10,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:10,640 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 12:07:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144567901] [2021-12-15 12:07:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144567901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:07:10,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421798071] [2021-12-15 12:07:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:07:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:07:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:07:10,642 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 12:07:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:11,359 INFO L93 Difference]: Finished difference Result 23845 states and 33919 transitions. [2021-12-15 12:07:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:07:11,360 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 12:07:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:11,395 INFO L225 Difference]: With dead ends: 23845 [2021-12-15 12:07:11,395 INFO L226 Difference]: Without dead ends: 20371 [2021-12-15 12:07:11,408 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 12:07:11,409 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6579 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6579 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:11,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6579 Valid, 3547 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:07:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2021-12-15 12:07:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 9241. [2021-12-15 12:07:11,789 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 12:07:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13337 transitions. [2021-12-15 12:07:11,801 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13337 transitions. Word has length 95 [2021-12-15 12:07:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:11,802 INFO L470 AbstractCegarLoop]: Abstraction has 9241 states and 13337 transitions. [2021-12-15 12:07:11,802 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 12:07:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13337 transitions. [2021-12-15 12:07:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:07:11,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:11,805 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 12:07:11,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 12:07:11,805 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2021-12-15 12:07:11,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:11,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856630938] [2021-12-15 12:07:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:11,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:11,853 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 12:07:11,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:11,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856630938] [2021-12-15 12:07:11,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856630938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:11,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:11,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:07:11,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88630813] [2021-12-15 12:07:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:11,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:07:11,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:07:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:07:11,856 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 12:07:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:12,759 INFO L93 Difference]: Finished difference Result 27317 states and 38767 transitions. [2021-12-15 12:07:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:07:12,759 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 12:07:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:12,794 INFO L225 Difference]: With dead ends: 27317 [2021-12-15 12:07:12,794 INFO L226 Difference]: Without dead ends: 23843 [2021-12-15 12:07:12,805 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 12:07:12,806 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 6480 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:12,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6480 Valid, 3582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:07:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23843 states. [2021-12-15 12:07:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23843 to 14457. [2021-12-15 12:07:13,462 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 12:07:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20569 transitions. [2021-12-15 12:07:13,484 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20569 transitions. Word has length 95 [2021-12-15 12:07:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:13,484 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 20569 transitions. [2021-12-15 12:07:13,484 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 12:07:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20569 transitions. [2021-12-15 12:07:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:07:13,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:13,488 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 12:07:13,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 12:07:13,488 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2021-12-15 12:07:13,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:13,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814032997] [2021-12-15 12:07:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:13,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:13,554 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 12:07:13,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:13,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814032997] [2021-12-15 12:07:13,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814032997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:13,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:13,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:07:13,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830360472] [2021-12-15 12:07:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:13,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:07:13,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:13,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:07:13,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:07:13,557 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 12:07:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:14,568 INFO L93 Difference]: Finished difference Result 30789 states and 43615 transitions. [2021-12-15 12:07:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:07:14,568 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 12:07:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:14,608 INFO L225 Difference]: With dead ends: 30789 [2021-12-15 12:07:14,608 INFO L226 Difference]: Without dead ends: 27315 [2021-12-15 12:07:14,620 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 12:07:14,622 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:14,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6492 Valid, 3626 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:07:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2021-12-15 12:07:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 17929. [2021-12-15 12:07:15,519 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 12:07:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25417 transitions. [2021-12-15 12:07:15,547 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25417 transitions. Word has length 95 [2021-12-15 12:07:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:15,547 INFO L470 AbstractCegarLoop]: Abstraction has 17929 states and 25417 transitions. [2021-12-15 12:07:15,547 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 12:07:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25417 transitions. [2021-12-15 12:07:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:07:15,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:15,555 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 12:07:15,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 12:07:15,555 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2021-12-15 12:07:15,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:15,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705977925] [2021-12-15 12:07:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:15,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:15,614 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 12:07:15,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:15,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705977925] [2021-12-15 12:07:15,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705977925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:15,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:15,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:07:15,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609768647] [2021-12-15 12:07:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:15,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:07:15,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:07:15,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:07:15,616 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 12:07:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:16,860 INFO L93 Difference]: Finished difference Result 34261 states and 48463 transitions. [2021-12-15 12:07:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:07:16,860 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 12:07:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:16,908 INFO L225 Difference]: With dead ends: 34261 [2021-12-15 12:07:16,908 INFO L226 Difference]: Without dead ends: 30787 [2021-12-15 12:07:16,921 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 12:07:16,922 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:16,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6560 Valid, 3630 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:07:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2021-12-15 12:07:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 21401. [2021-12-15 12:07:17,936 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 12:07:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 30265 transitions. [2021-12-15 12:07:17,968 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 30265 transitions. Word has length 95 [2021-12-15 12:07:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:17,969 INFO L470 AbstractCegarLoop]: Abstraction has 21401 states and 30265 transitions. [2021-12-15 12:07:17,969 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 12:07:17,969 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 30265 transitions. [2021-12-15 12:07:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 12:07:17,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:17,974 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 12:07:17,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 12:07:17,974 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2021-12-15 12:07:17,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:17,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785645518] [2021-12-15 12:07:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:17,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:18,020 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 12:07:18,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:18,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785645518] [2021-12-15 12:07:18,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785645518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:07:18,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:07:18,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 12:07:18,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991232820] [2021-12-15 12:07:18,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:07:18,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 12:07:18,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 12:07:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 12:07:18,023 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 12:07:19,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:19,632 INFO L93 Difference]: Finished difference Result 35653 states and 50431 transitions. [2021-12-15 12:07:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 12:07:19,633 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 12:07:19,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:19,689 INFO L225 Difference]: With dead ends: 35653 [2021-12-15 12:07:19,690 INFO L226 Difference]: Without dead ends: 33219 [2021-12-15 12:07:19,704 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 12:07:19,704 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 12:07:19,705 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 12:07:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2021-12-15 12:07:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23833. [2021-12-15 12:07:21,230 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 12:07:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23833 states to 23833 states and 33689 transitions. [2021-12-15 12:07:21,268 INFO L78 Accepts]: Start accepts. Automaton has 23833 states and 33689 transitions. Word has length 95 [2021-12-15 12:07:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:21,269 INFO L470 AbstractCegarLoop]: Abstraction has 23833 states and 33689 transitions. [2021-12-15 12:07:21,269 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 12:07:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 23833 states and 33689 transitions. [2021-12-15 12:07:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 12:07:21,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:21,275 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 12:07:21,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 12:07:21,275 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2021-12-15 12:07:21,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:21,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659848465] [2021-12-15 12:07:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:21,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:07:21,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:21,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659848465] [2021-12-15 12:07:21,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659848465] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 12:07:21,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055785153] [2021-12-15 12:07:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:21,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 12:07:21,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:07:21,480 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 12:07:21,480 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 12:07:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:21,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 12:07:21,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 12:07:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 12:07:22,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 12:07:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 12:07:22,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055785153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 12:07:22,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 12:07:22,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2021-12-15 12:07:22,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415180880] [2021-12-15 12:07:22,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 12:07:22,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 12:07:22,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 12:07:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-15 12:07:22,189 INFO L87 Difference]: Start difference. First operand 23833 states and 33689 transitions. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 12:07:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:07:36,158 INFO L93 Difference]: Finished difference Result 224959 states and 313544 transitions. [2021-12-15 12:07:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-15 12:07:36,159 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 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 12:07:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:07:36,539 INFO L225 Difference]: With dead ends: 224959 [2021-12-15 12:07:36,539 INFO L226 Difference]: Without dead ends: 209149 [2021-12-15 12:07:36,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1077, Invalid=4623, Unknown=0, NotChecked=0, Total=5700 [2021-12-15 12:07:36,747 INFO L933 BasicCegarLoop]: 1645 mSDtfsCounter, 15241 mSDsluCounter, 5826 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15241 SdHoareTripleChecker+Valid, 7471 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 12:07:36,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15241 Valid, 7471 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 12:07:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209149 states. [2021-12-15 12:07:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209149 to 133617. [2021-12-15 12:07:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133617 states, 133615 states have (on average 1.3744040713991692) internal successors, (183641), 133616 states have internal predecessors, (183641), 0 states have call successors, (0), 0 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 12:07:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133617 states to 133617 states and 183641 transitions. [2021-12-15 12:07:46,026 INFO L78 Accepts]: Start accepts. Automaton has 133617 states and 183641 transitions. Word has length 96 [2021-12-15 12:07:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:07:46,027 INFO L470 AbstractCegarLoop]: Abstraction has 133617 states and 183641 transitions. [2021-12-15 12:07:46,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 12:07:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 133617 states and 183641 transitions. [2021-12-15 12:07:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-15 12:07:46,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:07:46,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:07:46,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-15 12:07:46,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 12:07:46,247 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:07:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:07:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1652593473, now seen corresponding path program 1 times [2021-12-15 12:07:46,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:07:46,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321418030] [2021-12-15 12:07:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:46,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:07:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:07:46,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:07:46,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321418030] [2021-12-15 12:07:46,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321418030] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 12:07:46,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263964661] [2021-12-15 12:07:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:07:46,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 12:07:46,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:07:46,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 12:07:46,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 12:07:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:07:46,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-15 12:07:46,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 12:07:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:07:47,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 12:07:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:07:48,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263964661] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 12:07:48,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 12:07:48,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2021-12-15 12:07:48,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009046203] [2021-12-15 12:07:48,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 12:07:48,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-15 12:07:48,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:07:48,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-15 12:07:48,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-12-15 12:07:48,797 INFO L87 Difference]: Start difference. First operand 133617 states and 183641 transitions. Second operand has 28 states, 28 states have (on average 8.678571428571429) internal successors, (243), 28 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)