./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.8.1.ufo.UNBOUNDED.pals+Problem12_label02.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 dfa3eba44a9bea88c5e5172bb0d59f15b4500aac9e1ca0a62eab29a7e65f8827 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:58:58,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:58:58,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:58:58,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:58:58,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:58:58,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:58:58,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:58:58,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:58:58,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:58:58,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:58:58,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:58:58,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:58:58,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:58:58,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:58:58,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:58:58,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:58:58,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:58:58,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:58:59,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:58:59,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:58:59,006 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:58:59,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:58:59,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:58:59,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:58:59,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:58:59,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:58:59,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:58:59,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:58:59,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:58:59,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:58:59,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:58:59,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:58:59,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:58:59,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:58:59,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:58:59,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:58:59,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:58:59,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:58:59,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:58:59,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:58:59,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:58:59,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:58:59,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:58:59,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:58:59,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:58:59,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:58:59,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:58:59,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:58:59,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:58:59,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:58:59,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:58:59,050 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:58:59,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:58:59,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:58:59,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:58:59,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:58:59,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:58:59,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:58:59,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:58:59,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:58:59,052 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:58:59,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:58:59,052 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:58:59,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:58:59,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:58:59,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:58:59,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:58:59,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:58:59,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:58:59,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:58:59,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:58:59,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:58:59,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:58:59,054 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:58:59,054 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:58:59,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:58:59,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa3eba44a9bea88c5e5172bb0d59f15b4500aac9e1ca0a62eab29a7e65f8827 [2022-07-21 07:58:59,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:58:59,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:58:59,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:58:59,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:58:59,345 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:58:59,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-07-21 07:58:59,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f649a978f/fe40a12ab102409783d8113c6af88c82/FLAG013b57c72 [2022-07-21 07:58:59,948 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:58:59,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-07-21 07:58:59,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f649a978f/fe40a12ab102409783d8113c6af88c82/FLAG013b57c72 [2022-07-21 07:59:00,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f649a978f/fe40a12ab102409783d8113c6af88c82 [2022-07-21 07:59:00,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:59:00,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:59:00,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:59:00,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:59:00,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:59:00,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:59:00" (1/1) ... [2022-07-21 07:59:00,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77545a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:00, skipping insertion in model container [2022-07-21 07:59:00,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:59:00" (1/1) ... [2022-07-21 07:59:00,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:59:00,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:59:00,560 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.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[26925,26938] [2022-07-21 07:59:00,610 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.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[34215,34228] [2022-07-21 07:59:01,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:59:01,043 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:59:01,083 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.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[26925,26938] [2022-07-21 07:59:01,103 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.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[34215,34228] [2022-07-21 07:59:01,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:59:01,396 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:59:01,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01 WrapperNode [2022-07-21 07:59:01,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:59:01,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:59:01,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:59:01,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:59:01,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:01,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:01,758 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5280 [2022-07-21 07:59:01,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:59:01,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:59:01,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:59:01,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:59:01,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:01,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:01,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:01,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:02,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:02,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:02,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:02,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:59:02,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:59:02,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:59:02,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:59:02,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (1/1) ... [2022-07-21 07:59:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:59:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:59:02,293 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) [2022-07-21 07:59:02,321 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 [2022-07-21 07:59:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:59:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:59:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:59:02,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:59:02,581 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:59:02,582 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:59:05,263 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:59:05,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:59:05,274 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 07:59:05,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:59:05 BoogieIcfgContainer [2022-07-21 07:59:05,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:59:05,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:59:05,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:59:05,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:59:05,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:59:00" (1/3) ... [2022-07-21 07:59:05,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173fe36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:59:05, skipping insertion in model container [2022-07-21 07:59:05,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:01" (2/3) ... [2022-07-21 07:59:05,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173fe36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:59:05, skipping insertion in model container [2022-07-21 07:59:05,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:59:05" (3/3) ... [2022-07-21 07:59:05,282 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-07-21 07:59:05,291 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:59:05,292 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:59:05,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:59:05,339 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c3f28b1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ebcaa20 [2022-07-21 07:59:05,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:59:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 07:59:05,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:05,353 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:59:05,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:05,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:05,358 INFO L85 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2022-07-21 07:59:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:05,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155810076] [2022-07-21 07:59:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155810076] [2022-07-21 07:59:05,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155810076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:05,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:05,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:59:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346990501] [2022-07-21 07:59:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:05,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 07:59:05,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 07:59:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 07:59:05,601 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:05,677 INFO L93 Difference]: Finished difference Result 1861 states and 3516 transitions. [2022-07-21 07:59:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 07:59:05,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-21 07:59:05,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:05,695 INFO L225 Difference]: With dead ends: 1861 [2022-07-21 07:59:05,695 INFO L226 Difference]: Without dead ends: 899 [2022-07-21 07:59:05,702 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:05,704 INFO L413 NwaCegarLoop]: 1755 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, 1755 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 [2022-07-21 07:59:05,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-07-21 07:59:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2022-07-21 07:59:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8851727982162765) internal successors, (1691), 898 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1691 transitions. [2022-07-21 07:59:05,779 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1691 transitions. Word has length 46 [2022-07-21 07:59:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1691 transitions. [2022-07-21 07:59:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1691 transitions. [2022-07-21 07:59:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 07:59:05,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:05,786 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:59:05,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:59:05,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:05,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2022-07-21 07:59:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:05,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536114558] [2022-07-21 07:59:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:05,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:05,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536114558] [2022-07-21 07:59:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536114558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:05,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:05,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:59:05,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687867838] [2022-07-21 07:59:05,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:59:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:05,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:59:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:59:05,944 INFO L87 Difference]: Start difference. First operand 899 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:06,047 INFO L93 Difference]: Finished difference Result 981 states and 1819 transitions. [2022-07-21 07:59:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:59:06,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-21 07:59:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:06,053 INFO L225 Difference]: With dead ends: 981 [2022-07-21 07:59:06,053 INFO L226 Difference]: Without dead ends: 899 [2022-07-21 07:59:06,055 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:06,057 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:06,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:59:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-07-21 07:59:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2022-07-21 07:59:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8171683389074693) internal successors, (1630), 898 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1630 transitions. [2022-07-21 07:59:06,089 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1630 transitions. Word has length 46 [2022-07-21 07:59:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:06,089 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1630 transitions. [2022-07-21 07:59:06,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1630 transitions. [2022-07-21 07:59:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 07:59:06,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:06,094 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:59:06,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:59:06,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash 614555915, now seen corresponding path program 1 times [2022-07-21 07:59:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:06,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324759849] [2022-07-21 07:59:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:06,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:06,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:06,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324759849] [2022-07-21 07:59:06,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324759849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:06,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:06,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:59:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077055020] [2022-07-21 07:59:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:06,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:06,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:06,196 INFO L87 Difference]: Start difference. First operand 899 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:09,057 INFO L93 Difference]: Finished difference Result 2403 states and 4503 transitions. [2022-07-21 07:59:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-21 07:59:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:09,063 INFO L225 Difference]: With dead ends: 2403 [2022-07-21 07:59:09,063 INFO L226 Difference]: Without dead ends: 1650 [2022-07-21 07:59:09,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:09,065 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 929 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:09,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 666 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 07:59:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-07-21 07:59:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-07-21 07:59:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.583131067961165) internal successors, (2609), 1649 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2609 transitions. [2022-07-21 07:59:09,096 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2609 transitions. Word has length 63 [2022-07-21 07:59:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:09,096 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2609 transitions. [2022-07-21 07:59:09,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2609 transitions. [2022-07-21 07:59:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:09,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:09,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:09,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:59:09,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2022-07-21 07:59:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:09,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908384574] [2022-07-21 07:59:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:09,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:09,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:09,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908384574] [2022-07-21 07:59:09,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908384574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:09,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:09,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70028484] [2022-07-21 07:59:09,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:09,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:09,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:09,159 INFO L87 Difference]: Start difference. First operand 1650 states and 2609 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:09,184 INFO L93 Difference]: Finished difference Result 1800 states and 2847 transitions. [2022-07-21 07:59:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:09,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:09,190 INFO L225 Difference]: With dead ends: 1800 [2022-07-21 07:59:09,190 INFO L226 Difference]: Without dead ends: 1722 [2022-07-21 07:59:09,191 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:09,192 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 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 [2022-07-21 07:59:09,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-07-21 07:59:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2022-07-21 07:59:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5838183934807917) internal successors, (2721), 1719 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2721 transitions. [2022-07-21 07:59:09,220 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2721 transitions. Word has length 106 [2022-07-21 07:59:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:09,220 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2721 transitions. [2022-07-21 07:59:09,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2721 transitions. [2022-07-21 07:59:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:09,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:09,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:09,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:59:09,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2022-07-21 07:59:09,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:09,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584767341] [2022-07-21 07:59:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:09,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:09,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:09,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584767341] [2022-07-21 07:59:09,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584767341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:09,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:09,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:09,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229072291] [2022-07-21 07:59:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:09,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:09,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:09,273 INFO L87 Difference]: Start difference. First operand 1720 states and 2721 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:09,323 INFO L93 Difference]: Finished difference Result 2004 states and 3173 transitions. [2022-07-21 07:59:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:09,330 INFO L225 Difference]: With dead ends: 2004 [2022-07-21 07:59:09,330 INFO L226 Difference]: Without dead ends: 1856 [2022-07-21 07:59:09,332 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:09,334 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 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 [2022-07-21 07:59:09,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-07-21 07:59:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1854. [2022-07-21 07:59:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1852 states have (on average 1.5842332613390928) internal successors, (2934), 1853 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2934 transitions. [2022-07-21 07:59:09,371 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2934 transitions. Word has length 106 [2022-07-21 07:59:09,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:09,374 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 2934 transitions. [2022-07-21 07:59:09,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2934 transitions. [2022-07-21 07:59:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:09,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:09,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:09,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:59:09,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:09,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2022-07-21 07:59:09,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:09,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365873422] [2022-07-21 07:59:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:09,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:09,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:09,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365873422] [2022-07-21 07:59:09,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365873422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:09,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:09,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:09,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758131253] [2022-07-21 07:59:09,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:09,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:09,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:09,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:09,429 INFO L87 Difference]: Start difference. First operand 1854 states and 2934 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:09,518 INFO L93 Difference]: Finished difference Result 2394 states and 3792 transitions. [2022-07-21 07:59:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:09,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:09,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:09,527 INFO L225 Difference]: With dead ends: 2394 [2022-07-21 07:59:09,528 INFO L226 Difference]: Without dead ends: 2112 [2022-07-21 07:59:09,529 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:09,533 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 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 [2022-07-21 07:59:09,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-07-21 07:59:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2110. [2022-07-21 07:59:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2108 states have (on average 1.5834914611005693) internal successors, (3338), 2109 states have internal predecessors, (3338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3338 transitions. [2022-07-21 07:59:09,573 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3338 transitions. Word has length 106 [2022-07-21 07:59:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:09,574 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3338 transitions. [2022-07-21 07:59:09,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3338 transitions. [2022-07-21 07:59:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:09,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:09,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:59:09,576 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2022-07-21 07:59:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:09,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648357044] [2022-07-21 07:59:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:09,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:09,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648357044] [2022-07-21 07:59:09,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648357044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:09,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:09,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:09,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428000887] [2022-07-21 07:59:09,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:09,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:09,655 INFO L87 Difference]: Start difference. First operand 2110 states and 3338 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:09,697 INFO L93 Difference]: Finished difference Result 3138 states and 4964 transitions. [2022-07-21 07:59:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:09,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:09,704 INFO L225 Difference]: With dead ends: 3138 [2022-07-21 07:59:09,704 INFO L226 Difference]: Without dead ends: 2600 [2022-07-21 07:59:09,706 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:09,708 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 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 [2022-07-21 07:59:09,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-07-21 07:59:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2022-07-21 07:59:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2596 states have (on average 1.5801232665639446) internal successors, (4102), 2597 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 4102 transitions. [2022-07-21 07:59:09,756 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 4102 transitions. Word has length 106 [2022-07-21 07:59:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:09,756 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 4102 transitions. [2022-07-21 07:59:09,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 4102 transitions. [2022-07-21 07:59:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:09,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:09,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:09,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:59:09,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2022-07-21 07:59:09,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:09,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684261255] [2022-07-21 07:59:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:09,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:09,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684261255] [2022-07-21 07:59:09,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684261255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:09,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:09,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:09,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601731795] [2022-07-21 07:59:09,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:09,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:09,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:09,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:09,821 INFO L87 Difference]: Start difference. First operand 2598 states and 4102 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:09,872 INFO L93 Difference]: Finished difference Result 4554 states and 7176 transitions. [2022-07-21 07:59:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:09,882 INFO L225 Difference]: With dead ends: 4554 [2022-07-21 07:59:09,883 INFO L226 Difference]: Without dead ends: 3528 [2022-07-21 07:59:09,885 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:09,885 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 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 [2022-07-21 07:59:09,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-07-21 07:59:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-07-21 07:59:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3524 states have (on average 1.572644721906924) internal successors, (5542), 3525 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5542 transitions. [2022-07-21 07:59:09,958 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5542 transitions. Word has length 106 [2022-07-21 07:59:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:09,958 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5542 transitions. [2022-07-21 07:59:09,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5542 transitions. [2022-07-21 07:59:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:09,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:09,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:09,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:59:09,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2022-07-21 07:59:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:09,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979487563] [2022-07-21 07:59:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:10,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979487563] [2022-07-21 07:59:10,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979487563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:10,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:10,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:10,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044139950] [2022-07-21 07:59:10,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:10,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:10,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:10,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:10,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:10,030 INFO L87 Difference]: Start difference. First operand 3526 states and 5542 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:10,118 INFO L93 Difference]: Finished difference Result 7242 states and 11336 transitions. [2022-07-21 07:59:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:10,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:10,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:10,134 INFO L225 Difference]: With dead ends: 7242 [2022-07-21 07:59:10,134 INFO L226 Difference]: Without dead ends: 5288 [2022-07-21 07:59:10,138 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:10,140 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 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 [2022-07-21 07:59:10,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2022-07-21 07:59:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5286. [2022-07-21 07:59:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5284 states have (on average 1.560560181680545) internal successors, (8246), 5285 states have internal predecessors, (8246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8246 transitions. [2022-07-21 07:59:10,273 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8246 transitions. Word has length 106 [2022-07-21 07:59:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:10,274 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 8246 transitions. [2022-07-21 07:59:10,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:10,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8246 transitions. [2022-07-21 07:59:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:10,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:10,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:10,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:59:10,276 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2022-07-21 07:59:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738043580] [2022-07-21 07:59:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:10,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738043580] [2022-07-21 07:59:10,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738043580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:10,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:10,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:10,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169554428] [2022-07-21 07:59:10,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:10,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:10,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:10,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:10,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:10,322 INFO L87 Difference]: Start difference. First operand 5286 states and 8246 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:10,562 INFO L93 Difference]: Finished difference Result 12330 states and 19128 transitions. [2022-07-21 07:59:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:10,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:10,593 INFO L225 Difference]: With dead ends: 12330 [2022-07-21 07:59:10,593 INFO L226 Difference]: Without dead ends: 8616 [2022-07-21 07:59:10,599 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:10,599 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 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 [2022-07-21 07:59:10,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2022-07-21 07:59:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 8614. [2022-07-21 07:59:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8614 states, 8612 states have (on average 1.5445889456572224) internal successors, (13302), 8613 states have internal predecessors, (13302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8614 states to 8614 states and 13302 transitions. [2022-07-21 07:59:11,008 INFO L78 Accepts]: Start accepts. Automaton has 8614 states and 13302 transitions. Word has length 106 [2022-07-21 07:59:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:11,008 INFO L495 AbstractCegarLoop]: Abstraction has 8614 states and 13302 transitions. [2022-07-21 07:59:11,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8614 states and 13302 transitions. [2022-07-21 07:59:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:11,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:11,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:11,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:59:11,010 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2022-07-21 07:59:11,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:11,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102785677] [2022-07-21 07:59:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:11,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:11,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:11,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102785677] [2022-07-21 07:59:11,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102785677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:11,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:11,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 07:59:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643132132] [2022-07-21 07:59:11,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:11,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 07:59:11,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 07:59:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 07:59:11,093 INFO L87 Difference]: Start difference. First operand 8614 states and 13302 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:14,857 INFO L93 Difference]: Finished difference Result 121286 states and 186374 transitions. [2022-07-21 07:59:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 07:59:14,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 07:59:14,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:15,131 INFO L225 Difference]: With dead ends: 121286 [2022-07-21 07:59:15,131 INFO L226 Difference]: Without dead ends: 114244 [2022-07-21 07:59:15,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-21 07:59:15,163 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:15,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:59:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114244 states. [2022-07-21 07:59:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114244 to 15654. [2022-07-21 07:59:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15654 states, 15652 states have (on average 1.5245336059289547) internal successors, (23862), 15653 states have internal predecessors, (23862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15654 states to 15654 states and 23862 transitions. [2022-07-21 07:59:16,785 INFO L78 Accepts]: Start accepts. Automaton has 15654 states and 23862 transitions. Word has length 106 [2022-07-21 07:59:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:16,785 INFO L495 AbstractCegarLoop]: Abstraction has 15654 states and 23862 transitions. [2022-07-21 07:59:16,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 15654 states and 23862 transitions. [2022-07-21 07:59:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:16,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:16,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:16,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:59:16,787 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2022-07-21 07:59:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:16,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636548694] [2022-07-21 07:59:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:16,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:16,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636548694] [2022-07-21 07:59:16,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636548694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:16,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:16,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010466705] [2022-07-21 07:59:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:16,840 INFO L87 Difference]: Start difference. First operand 15654 states and 23862 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:18,575 INFO L93 Difference]: Finished difference Result 42410 states and 64184 transitions. [2022-07-21 07:59:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 07:59:18,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:18,618 INFO L225 Difference]: With dead ends: 42410 [2022-07-21 07:59:18,619 INFO L226 Difference]: Without dead ends: 28328 [2022-07-21 07:59:18,633 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:18,634 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:18,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28328 states. [2022-07-21 07:59:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28328 to 28070. [2022-07-21 07:59:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4931594698589141) internal successors, (41910), 28069 states have internal predecessors, (41910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41910 transitions. [2022-07-21 07:59:20,422 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41910 transitions. Word has length 108 [2022-07-21 07:59:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:20,423 INFO L495 AbstractCegarLoop]: Abstraction has 28070 states and 41910 transitions. [2022-07-21 07:59:20,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41910 transitions. [2022-07-21 07:59:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:20,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:20,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:20,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:59:20,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2022-07-21 07:59:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:20,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704911423] [2022-07-21 07:59:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:20,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704911423] [2022-07-21 07:59:20,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704911423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:20,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:20,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 07:59:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80976770] [2022-07-21 07:59:20,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:20,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 07:59:20,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 07:59:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 07:59:20,678 INFO L87 Difference]: Start difference. First operand 28070 states and 41910 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:22,754 INFO L93 Difference]: Finished difference Result 54570 states and 81336 transitions. [2022-07-21 07:59:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:59:22,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 07:59:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:22,794 INFO L225 Difference]: With dead ends: 54570 [2022-07-21 07:59:22,795 INFO L226 Difference]: Without dead ends: 28072 [2022-07-21 07:59:22,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:59:22,817 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 3608 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:22,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 2473 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:59:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28072 states. [2022-07-21 07:59:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28072 to 28070. [2022-07-21 07:59:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4840387630041327) internal successors, (41654), 28069 states have internal predecessors, (41654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41654 transitions. [2022-07-21 07:59:24,639 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41654 transitions. Word has length 108 [2022-07-21 07:59:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:24,639 INFO L495 AbstractCegarLoop]: Abstraction has 28070 states and 41654 transitions. [2022-07-21 07:59:24,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41654 transitions. [2022-07-21 07:59:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 07:59:24,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:24,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 07:59:24,642 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2022-07-21 07:59:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:24,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5194513] [2022-07-21 07:59:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:24,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:24,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5194513] [2022-07-21 07:59:24,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5194513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:24,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:24,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:59:24,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364138749] [2022-07-21 07:59:24,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:24,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:59:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:24,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:59:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:59:24,712 INFO L87 Difference]: Start difference. First operand 28070 states and 41654 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:26,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:26,832 INFO L93 Difference]: Finished difference Result 54568 states and 80823 transitions. [2022-07-21 07:59:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:59:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-21 07:59:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:26,865 INFO L225 Difference]: With dead ends: 54568 [2022-07-21 07:59:26,866 INFO L226 Difference]: Without dead ends: 28070 [2022-07-21 07:59:26,891 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:26,893 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:26,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:59:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28070 states. [2022-07-21 07:59:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28070 to 28070. [2022-07-21 07:59:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4749180561493516) internal successors, (41398), 28069 states have internal predecessors, (41398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41398 transitions. [2022-07-21 07:59:29,259 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41398 transitions. Word has length 109 [2022-07-21 07:59:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:29,260 INFO L495 AbstractCegarLoop]: Abstraction has 28070 states and 41398 transitions. [2022-07-21 07:59:29,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41398 transitions. [2022-07-21 07:59:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 07:59:29,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:29,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 07:59:29,262 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2022-07-21 07:59:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:29,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625780441] [2022-07-21 07:59:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:29,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:29,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625780441] [2022-07-21 07:59:29,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625780441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:29,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:29,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:59:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316614102] [2022-07-21 07:59:29,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:29,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:59:29,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:59:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:59:29,336 INFO L87 Difference]: Start difference. First operand 28070 states and 41398 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:32,604 INFO L93 Difference]: Finished difference Result 47696 states and 69867 transitions. [2022-07-21 07:59:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:59:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-21 07:59:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:32,749 INFO L225 Difference]: With dead ends: 47696 [2022-07-21 07:59:32,749 INFO L226 Difference]: Without dead ends: 47694 [2022-07-21 07:59:32,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:59:32,762 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:32,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47694 states. [2022-07-21 07:59:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47694 to 28838. [2022-07-21 07:59:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28838 states, 28836 states have (on average 1.4578304896656957) internal successors, (42038), 28837 states have internal predecessors, (42038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28838 states to 28838 states and 42038 transitions. [2022-07-21 07:59:35,178 INFO L78 Accepts]: Start accepts. Automaton has 28838 states and 42038 transitions. Word has length 109 [2022-07-21 07:59:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:35,178 INFO L495 AbstractCegarLoop]: Abstraction has 28838 states and 42038 transitions. [2022-07-21 07:59:35,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 28838 states and 42038 transitions. [2022-07-21 07:59:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 07:59:35,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:35,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:35,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 07:59:35,196 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2022-07-21 07:59:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:35,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388487948] [2022-07-21 07:59:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388487948] [2022-07-21 07:59:35,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388487948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:35,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:35,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725042010] [2022-07-21 07:59:35,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:35,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:35,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:35,265 INFO L87 Difference]: Start difference. First operand 28838 states and 42038 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:38,350 INFO L93 Difference]: Finished difference Result 56493 states and 82492 transitions. [2022-07-21 07:59:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-21 07:59:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:38,414 INFO L225 Difference]: With dead ends: 56493 [2022-07-21 07:59:38,414 INFO L226 Difference]: Without dead ends: 41642 [2022-07-21 07:59:38,430 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:59:38,431 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 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 [2022-07-21 07:59:38,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:38,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41642 states. [2022-07-21 07:59:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41642 to 41640. [2022-07-21 07:59:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41640 states, 41638 states have (on average 1.4492530861232529) internal successors, (60344), 41639 states have internal predecessors, (60344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41640 states to 41640 states and 60344 transitions. [2022-07-21 07:59:41,928 INFO L78 Accepts]: Start accepts. Automaton has 41640 states and 60344 transitions. Word has length 110 [2022-07-21 07:59:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:41,928 INFO L495 AbstractCegarLoop]: Abstraction has 41640 states and 60344 transitions. [2022-07-21 07:59:41,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 41640 states and 60344 transitions. [2022-07-21 07:59:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-21 07:59:41,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:41,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:41,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 07:59:41,933 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:41,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash -779373645, now seen corresponding path program 1 times [2022-07-21 07:59:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:41,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845273227] [2022-07-21 07:59:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:41,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845273227] [2022-07-21 07:59:41,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845273227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:41,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:41,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:59:41,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910604819] [2022-07-21 07:59:41,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:41,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:41,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:41,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:41,973 INFO L87 Difference]: Start difference. First operand 41640 states and 60344 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:47,467 INFO L93 Difference]: Finished difference Result 44648 states and 65176 transitions. [2022-07-21 07:59:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-07-21 07:59:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:47,534 INFO L225 Difference]: With dead ends: 44648 [2022-07-21 07:59:47,534 INFO L226 Difference]: Without dead ends: 43144 [2022-07-21 07:59:47,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:47,549 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1105 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:47,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 773 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 07:59:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43144 states. [2022-07-21 07:59:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43144 to 43142. [2022-07-21 07:59:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43142 states, 43140 states have (on average 1.4444830783495595) internal successors, (62315), 43141 states have internal predecessors, (62315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43142 states to 43142 states and 62315 transitions. [2022-07-21 07:59:51,008 INFO L78 Accepts]: Start accepts. Automaton has 43142 states and 62315 transitions. Word has length 138 [2022-07-21 07:59:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:51,008 INFO L495 AbstractCegarLoop]: Abstraction has 43142 states and 62315 transitions. [2022-07-21 07:59:51,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 43142 states and 62315 transitions. [2022-07-21 07:59:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 07:59:51,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:51,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 07:59:51,026 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2022-07-21 07:59:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:51,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39263130] [2022-07-21 07:59:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 07:59:51,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:51,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39263130] [2022-07-21 07:59:51,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39263130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:51,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:51,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 07:59:51,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272497851] [2022-07-21 07:59:51,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:51,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 07:59:51,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:51,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 07:59:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 07:59:51,116 INFO L87 Difference]: Start difference. First operand 43142 states and 62315 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)