./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.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 b4e7977192ae56aeb09dc050b873d7b40c1e47d710f31b358c00a46d3bffe743 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:00:36,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:00:36,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:00:36,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:00:37,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:00:37,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:00:37,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:00:37,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:00:37,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:00:37,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:00:37,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:00:37,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:00:37,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:00:37,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:00:37,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:00:37,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:00:37,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:00:37,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:00:37,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:00:37,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:00:37,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:00:37,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:00:37,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:00:37,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:00:37,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:00:37,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:00:37,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:00:37,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:00:37,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:00:37,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:00:37,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:00:37,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:00:37,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:00:37,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:00:37,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:00:37,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:00:37,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:00:37,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:00:37,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:00:37,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:00:37,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:00:37,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:00:37,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:00:37,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:00:37,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:00:37,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:00:37,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:00:37,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:00:37,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:00:37,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:00:37,053 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:00:37,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:00:37,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:00:37,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:00:37,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:00:37,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:00:37,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:00:37,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:00:37,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:00:37,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:00:37,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:00:37,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:00:37,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:00:37,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:00:37,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:00:37,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:00:37,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:00:37,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:00:37,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:00:37,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:00:37,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:00:37,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:00:37,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:00:37,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:00:37,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:00:37,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:00:37,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4e7977192ae56aeb09dc050b873d7b40c1e47d710f31b358c00a46d3bffe743 [2021-12-14 15:00:37,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:00:37,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:00:37,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:00:37,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:00:37,266 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:00:37,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2021-12-14 15:00:37,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/538edb69d/f4f47a6c08dd4464b51ef0f1587ba12c/FLAGab9ab9aa0 [2021-12-14 15:00:37,710 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:00:37,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2021-12-14 15:00:37,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/538edb69d/f4f47a6c08dd4464b51ef0f1587ba12c/FLAGab9ab9aa0 [2021-12-14 15:00:37,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/538edb69d/f4f47a6c08dd4464b51ef0f1587ba12c [2021-12-14 15:00:37,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:00:37,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:00:37,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:00:37,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:00:37,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:00:37,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:37,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ffa29ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37, skipping insertion in model container [2021-12-14 15:00:37,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:37,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:00:37,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:00:37,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2021-12-14 15:00:37,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:00:37,933 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:00:37,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2021-12-14 15:00:37,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:00:37,987 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:00:37,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37 WrapperNode [2021-12-14 15:00:37,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:00:37,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:00:37,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:00:37,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:00:37,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,049 INFO L137 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 393 [2021-12-14 15:00:38,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:00:38,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:00:38,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:00:38,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:00:38,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:00:38,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:00:38,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:00:38,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:00:38,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (1/1) ... [2021-12-14 15:00:38,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:00:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:00:38,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:00:38,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:00:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:00:38,264 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:00:38,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:00:38,639 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:00:38,645 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:00:38,645 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:00:38,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:00:38 BoogieIcfgContainer [2021-12-14 15:00:38,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:00:38,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:00:38,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:00:38,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:00:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:00:37" (1/3) ... [2021-12-14 15:00:38,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c2f61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:00:38, skipping insertion in model container [2021-12-14 15:00:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:00:37" (2/3) ... [2021-12-14 15:00:38,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c2f61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:00:38, skipping insertion in model container [2021-12-14 15:00:38,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:00:38" (3/3) ... [2021-12-14 15:00:38,653 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2021-12-14 15:00:38,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:00:38,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 15:00:38,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:00:38,698 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:00:38,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 15:00:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 109 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 15:00:38,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:38,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:38,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:38,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1259035486, now seen corresponding path program 1 times [2021-12-14 15:00:38,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:38,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667243265] [2021-12-14 15:00:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:38,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:38,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:38,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667243265] [2021-12-14 15:00:38,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667243265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:38,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:38,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 15:00:38,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827744028] [2021-12-14 15:00:38,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:38,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 15:00:38,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 15:00:38,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:00:38,891 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 109 states have internal predecessors, (188), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:38,908 INFO L93 Difference]: Finished difference Result 175 states and 290 transitions. [2021-12-14 15:00:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 15:00:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-14 15:00:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:38,927 INFO L225 Difference]: With dead ends: 175 [2021-12-14 15:00:38,927 INFO L226 Difference]: Without dead ends: 106 [2021-12-14 15:00:38,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:00:38,932 INFO L933 BasicCegarLoop]: 185 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, 185 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:38,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-14 15:00:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-12-14 15:00:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.723809523809524) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 181 transitions. [2021-12-14 15:00:38,970 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 181 transitions. Word has length 37 [2021-12-14 15:00:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:38,971 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 181 transitions. [2021-12-14 15:00:38,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 181 transitions. [2021-12-14 15:00:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 15:00:38,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:38,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:38,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:00:38,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1533795100, now seen corresponding path program 1 times [2021-12-14 15:00:38,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238531335] [2021-12-14 15:00:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:38,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:39,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238531335] [2021-12-14 15:00:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238531335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:39,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:39,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:00:39,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260581597] [2021-12-14 15:00:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:39,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:00:39,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:39,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:00:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:00:39,067 INFO L87 Difference]: Start difference. First operand 106 states and 181 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:39,168 INFO L93 Difference]: Finished difference Result 170 states and 280 transitions. [2021-12-14 15:00:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:00:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-14 15:00:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:39,171 INFO L225 Difference]: With dead ends: 170 [2021-12-14 15:00:39,171 INFO L226 Difference]: Without dead ends: 106 [2021-12-14 15:00:39,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:00:39,173 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 3 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:39,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 673 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:00:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-14 15:00:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-12-14 15:00:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3428571428571427) internal successors, (141), 105 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2021-12-14 15:00:39,189 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 141 transitions. Word has length 37 [2021-12-14 15:00:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:39,190 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 141 transitions. [2021-12-14 15:00:39,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 141 transitions. [2021-12-14 15:00:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 15:00:39,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:39,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:39,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:00:39,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1950823117, now seen corresponding path program 1 times [2021-12-14 15:00:39,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:39,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148591535] [2021-12-14 15:00:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:39,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:39,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:39,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148591535] [2021-12-14 15:00:39,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148591535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:39,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:39,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:00:39,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740579143] [2021-12-14 15:00:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:39,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:00:39,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:00:39,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,298 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:39,319 INFO L93 Difference]: Finished difference Result 220 states and 321 transitions. [2021-12-14 15:00:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:00:39,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-14 15:00:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:39,322 INFO L225 Difference]: With dead ends: 220 [2021-12-14 15:00:39,322 INFO L226 Difference]: Without dead ends: 160 [2021-12-14 15:00:39,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,324 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:39,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 315 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-14 15:00:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2021-12-14 15:00:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4267515923566878) internal successors, (224), 157 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 224 transitions. [2021-12-14 15:00:39,338 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 224 transitions. Word has length 76 [2021-12-14 15:00:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:39,338 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 224 transitions. [2021-12-14 15:00:39,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 224 transitions. [2021-12-14 15:00:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 15:00:39,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:39,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:39,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:00:39,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash 699917825, now seen corresponding path program 1 times [2021-12-14 15:00:39,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:39,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104907159] [2021-12-14 15:00:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:39,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:39,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:39,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104907159] [2021-12-14 15:00:39,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104907159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:39,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:39,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:00:39,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521240366] [2021-12-14 15:00:39,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:39,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:00:39,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:39,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:00:39,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,412 INFO L87 Difference]: Start difference. First operand 158 states and 224 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:39,429 INFO L93 Difference]: Finished difference Result 370 states and 560 transitions. [2021-12-14 15:00:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:00:39,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-14 15:00:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:39,431 INFO L225 Difference]: With dead ends: 370 [2021-12-14 15:00:39,431 INFO L226 Difference]: Without dead ends: 258 [2021-12-14 15:00:39,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,432 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 81 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:39,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-14 15:00:39,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2021-12-14 15:00:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4862745098039216) internal successors, (379), 255 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 379 transitions. [2021-12-14 15:00:39,451 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 379 transitions. Word has length 76 [2021-12-14 15:00:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:39,451 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 379 transitions. [2021-12-14 15:00:39,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 379 transitions. [2021-12-14 15:00:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 15:00:39,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:39,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:39,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:00:39,456 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:39,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:39,457 INFO L85 PathProgramCache]: Analyzing trace with hash -45664905, now seen corresponding path program 1 times [2021-12-14 15:00:39,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:39,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963058942] [2021-12-14 15:00:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:39,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:39,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:39,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963058942] [2021-12-14 15:00:39,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963058942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:39,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:39,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:00:39,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033664208] [2021-12-14 15:00:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:39,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:00:39,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:39,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:00:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,507 INFO L87 Difference]: Start difference. First operand 256 states and 379 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:39,526 INFO L93 Difference]: Finished difference Result 652 states and 1005 transitions. [2021-12-14 15:00:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:00:39,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-14 15:00:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:39,529 INFO L225 Difference]: With dead ends: 652 [2021-12-14 15:00:39,529 INFO L226 Difference]: Without dead ends: 442 [2021-12-14 15:00:39,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,530 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 77 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:39,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 313 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-14 15:00:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 440. [2021-12-14 15:00:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.5193621867881548) internal successors, (667), 439 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 667 transitions. [2021-12-14 15:00:39,559 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 667 transitions. Word has length 76 [2021-12-14 15:00:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:39,560 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 667 transitions. [2021-12-14 15:00:39,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 667 transitions. [2021-12-14 15:00:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 15:00:39,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:39,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:39,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:00:39,566 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:39,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1985695763, now seen corresponding path program 1 times [2021-12-14 15:00:39,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:39,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726272388] [2021-12-14 15:00:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:39,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:39,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:39,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726272388] [2021-12-14 15:00:39,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726272388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:39,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:39,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:00:39,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138499909] [2021-12-14 15:00:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:39,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:00:39,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:39,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:00:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,642 INFO L87 Difference]: Start difference. First operand 440 states and 667 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:39,671 INFO L93 Difference]: Finished difference Result 1180 states and 1829 transitions. [2021-12-14 15:00:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:00:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-14 15:00:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:39,675 INFO L225 Difference]: With dead ends: 1180 [2021-12-14 15:00:39,676 INFO L226 Difference]: Without dead ends: 786 [2021-12-14 15:00:39,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:39,678 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:39,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 312 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:39,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-12-14 15:00:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 784. [2021-12-14 15:00:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.5312899106002553) internal successors, (1199), 783 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1199 transitions. [2021-12-14 15:00:39,706 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1199 transitions. Word has length 76 [2021-12-14 15:00:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:39,706 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1199 transitions. [2021-12-14 15:00:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1199 transitions. [2021-12-14 15:00:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 15:00:39,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:39,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:39,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:00:39,708 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash 714986851, now seen corresponding path program 1 times [2021-12-14 15:00:39,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:39,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929605721] [2021-12-14 15:00:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:39,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:39,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:39,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929605721] [2021-12-14 15:00:39,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929605721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:39,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:39,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:00:39,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513052671] [2021-12-14 15:00:39,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:39,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:00:39,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:39,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:00:39,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:00:39,797 INFO L87 Difference]: Start difference. First operand 784 states and 1199 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:40,170 INFO L93 Difference]: Finished difference Result 9640 states and 15035 transitions. [2021-12-14 15:00:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 15:00:40,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-14 15:00:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:40,201 INFO L225 Difference]: With dead ends: 9640 [2021-12-14 15:00:40,201 INFO L226 Difference]: Without dead ends: 8902 [2021-12-14 15:00:40,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:00:40,209 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 2232 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:40,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 1240 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:00:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2021-12-14 15:00:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 1520. [2021-12-14 15:00:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 1.5266622778143515) internal successors, (2319), 1519 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2319 transitions. [2021-12-14 15:00:40,325 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2319 transitions. Word has length 76 [2021-12-14 15:00:40,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:40,325 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 2319 transitions. [2021-12-14 15:00:40,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2319 transitions. [2021-12-14 15:00:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-14 15:00:40,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:40,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:40,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:00:40,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1508096525, now seen corresponding path program 1 times [2021-12-14 15:00:40,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:40,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150557791] [2021-12-14 15:00:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:40,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:40,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150557791] [2021-12-14 15:00:40,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150557791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:40,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:40,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:00:40,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146586022] [2021-12-14 15:00:40,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:40,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:00:40,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:40,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:00:40,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:40,382 INFO L87 Difference]: Start difference. First operand 1520 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:40,441 INFO L93 Difference]: Finished difference Result 3694 states and 5667 transitions. [2021-12-14 15:00:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:00:40,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-14 15:00:40,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:40,448 INFO L225 Difference]: With dead ends: 3694 [2021-12-14 15:00:40,449 INFO L226 Difference]: Without dead ends: 2220 [2021-12-14 15:00:40,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:40,452 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 57 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:40,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 252 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2021-12-14 15:00:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2218. [2021-12-14 15:00:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 1.5196211096075778) internal successors, (3369), 2217 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3369 transitions. [2021-12-14 15:00:40,540 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3369 transitions. Word has length 78 [2021-12-14 15:00:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:40,540 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 3369 transitions. [2021-12-14 15:00:40,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3369 transitions. [2021-12-14 15:00:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-14 15:00:40,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:40,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:40,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:00:40,543 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1441603013, now seen corresponding path program 1 times [2021-12-14 15:00:40,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:40,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911824750] [2021-12-14 15:00:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:40,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:40,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911824750] [2021-12-14 15:00:40,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911824750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:40,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:40,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:00:40,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23562513] [2021-12-14 15:00:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:40,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:00:40,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:00:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:00:40,739 INFO L87 Difference]: Start difference. First operand 2218 states and 3369 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:41,003 INFO L93 Difference]: Finished difference Result 4390 states and 6691 transitions. [2021-12-14 15:00:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:00:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-14 15:00:41,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:41,010 INFO L225 Difference]: With dead ends: 4390 [2021-12-14 15:00:41,010 INFO L226 Difference]: Without dead ends: 2220 [2021-12-14 15:00:41,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:00:41,014 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 639 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:41,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 632 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:00:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2021-12-14 15:00:41,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2218. [2021-12-14 15:00:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 1.5087956698240865) internal successors, (3345), 2217 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3345 transitions. [2021-12-14 15:00:41,112 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3345 transitions. Word has length 78 [2021-12-14 15:00:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:41,112 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 3345 transitions. [2021-12-14 15:00:41,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3345 transitions. [2021-12-14 15:00:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-14 15:00:41,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:41,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:41,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:00:41,113 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 347311063, now seen corresponding path program 1 times [2021-12-14 15:00:41,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:41,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048979564] [2021-12-14 15:00:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:41,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:41,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:41,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048979564] [2021-12-14 15:00:41,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048979564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:41,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:41,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:00:41,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726664883] [2021-12-14 15:00:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:41,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:00:41,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:00:41,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:41,175 INFO L87 Difference]: Start difference. First operand 2218 states and 3345 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:41,283 INFO L93 Difference]: Finished difference Result 6270 states and 9459 transitions. [2021-12-14 15:00:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:00:41,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-14 15:00:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:41,294 INFO L225 Difference]: With dead ends: 6270 [2021-12-14 15:00:41,295 INFO L226 Difference]: Without dead ends: 4100 [2021-12-14 15:00:41,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:41,298 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 65 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:41,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-12-14 15:00:41,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 4098. [2021-12-14 15:00:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.4920673663656334) internal successors, (6113), 4097 states have internal predecessors, (6113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6113 transitions. [2021-12-14 15:00:41,464 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6113 transitions. Word has length 78 [2021-12-14 15:00:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:41,464 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 6113 transitions. [2021-12-14 15:00:41,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6113 transitions. [2021-12-14 15:00:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-14 15:00:41,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:41,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:41,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:00:41,466 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1594818679, now seen corresponding path program 1 times [2021-12-14 15:00:41,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:41,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195769965] [2021-12-14 15:00:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:41,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:41,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195769965] [2021-12-14 15:00:41,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195769965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:41,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:41,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:00:41,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532680228] [2021-12-14 15:00:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:41,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:00:41,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:41,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:00:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:41,509 INFO L87 Difference]: Start difference. First operand 4098 states and 6113 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:41,707 INFO L93 Difference]: Finished difference Result 11622 states and 17283 transitions. [2021-12-14 15:00:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:00:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-14 15:00:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:41,739 INFO L225 Difference]: With dead ends: 11622 [2021-12-14 15:00:41,739 INFO L226 Difference]: Without dead ends: 7572 [2021-12-14 15:00:41,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:00:41,746 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:41,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 311 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7572 states. [2021-12-14 15:00:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7572 to 7570. [2021-12-14 15:00:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.4692826000792707) internal successors, (11121), 7569 states have internal predecessors, (11121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 11121 transitions. [2021-12-14 15:00:42,090 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 11121 transitions. Word has length 78 [2021-12-14 15:00:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:42,090 INFO L470 AbstractCegarLoop]: Abstraction has 7570 states and 11121 transitions. [2021-12-14 15:00:42,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 11121 transitions. [2021-12-14 15:00:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-14 15:00:42,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:42,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:42,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:00:42,092 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2140223893, now seen corresponding path program 1 times [2021-12-14 15:00:42,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:42,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358897329] [2021-12-14 15:00:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:42,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:42,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:42,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358897329] [2021-12-14 15:00:42,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358897329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:42,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:42,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:00:42,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196865143] [2021-12-14 15:00:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:42,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:00:42,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:00:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:00:42,151 INFO L87 Difference]: Start difference. First operand 7570 states and 11121 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:42,660 INFO L93 Difference]: Finished difference Result 21942 states and 32339 transitions. [2021-12-14 15:00:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:00:42,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-14 15:00:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:42,683 INFO L225 Difference]: With dead ends: 21942 [2021-12-14 15:00:42,684 INFO L226 Difference]: Without dead ends: 14420 [2021-12-14 15:00:42,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:00:42,692 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 760 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:42,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 231 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:00:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14420 states. [2021-12-14 15:00:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14420 to 12690. [2021-12-14 15:00:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12690 states, 12689 states have (on average 1.4665458270943337) internal successors, (18609), 12689 states have internal predecessors, (18609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12690 states to 12690 states and 18609 transitions. [2021-12-14 15:00:43,214 INFO L78 Accepts]: Start accepts. Automaton has 12690 states and 18609 transitions. Word has length 79 [2021-12-14 15:00:43,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:43,214 INFO L470 AbstractCegarLoop]: Abstraction has 12690 states and 18609 transitions. [2021-12-14 15:00:43,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12690 states and 18609 transitions. [2021-12-14 15:00:43,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-14 15:00:43,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:43,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:43,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:00:43,216 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1438624019, now seen corresponding path program 1 times [2021-12-14 15:00:43,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:43,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959134123] [2021-12-14 15:00:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:43,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:00:43,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:43,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959134123] [2021-12-14 15:00:43,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959134123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:43,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:43,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:00:43,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886809373] [2021-12-14 15:00:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:43,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:00:43,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:00:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:00:43,277 INFO L87 Difference]: Start difference. First operand 12690 states and 18609 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:44,012 INFO L93 Difference]: Finished difference Result 24785 states and 35943 transitions. [2021-12-14 15:00:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:00:44,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-14 15:00:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:44,060 INFO L225 Difference]: With dead ends: 24785 [2021-12-14 15:00:44,061 INFO L226 Difference]: Without dead ends: 24783 [2021-12-14 15:00:44,069 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:00:44,069 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 256 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:44,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 588 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:00:44,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24783 states. [2021-12-14 15:00:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24783 to 13458. [2021-12-14 15:00:44,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13458 states, 13457 states have (on average 1.437541799806792) internal successors, (19345), 13457 states have internal predecessors, (19345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13458 states to 13458 states and 19345 transitions. [2021-12-14 15:00:44,686 INFO L78 Accepts]: Start accepts. Automaton has 13458 states and 19345 transitions. Word has length 79 [2021-12-14 15:00:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:44,686 INFO L470 AbstractCegarLoop]: Abstraction has 13458 states and 19345 transitions. [2021-12-14 15:00:44,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13458 states and 19345 transitions. [2021-12-14 15:00:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 15:00:44,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:44,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:44,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:00:44,693 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1530216785, now seen corresponding path program 1 times [2021-12-14 15:00:44,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:44,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383556775] [2021-12-14 15:00:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:44,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-14 15:00:44,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:44,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383556775] [2021-12-14 15:00:44,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383556775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:44,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:44,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:00:44,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654101165] [2021-12-14 15:00:44,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:44,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:00:44,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:00:44,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:00:44,768 INFO L87 Difference]: Start difference. First operand 13458 states and 19345 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:47,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:47,274 INFO L93 Difference]: Finished difference Result 98240 states and 141192 transitions. [2021-12-14 15:00:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:00:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 111 [2021-12-14 15:00:47,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:47,413 INFO L225 Difference]: With dead ends: 98240 [2021-12-14 15:00:47,413 INFO L226 Difference]: Without dead ends: 84830 [2021-12-14 15:00:47,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:00:47,445 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1411 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:47,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 939 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:00:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84830 states. [2021-12-14 15:00:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84830 to 26866. [2021-12-14 15:00:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26866 states, 26865 states have (on average 1.4323841429369069) internal successors, (38481), 26865 states have internal predecessors, (38481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26866 states to 26866 states and 38481 transitions. [2021-12-14 15:00:48,899 INFO L78 Accepts]: Start accepts. Automaton has 26866 states and 38481 transitions. Word has length 111 [2021-12-14 15:00:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:48,900 INFO L470 AbstractCegarLoop]: Abstraction has 26866 states and 38481 transitions. [2021-12-14 15:00:48,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 26866 states and 38481 transitions. [2021-12-14 15:00:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 15:00:48,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:48,909 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:48,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:00:48,909 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1517242895, now seen corresponding path program 1 times [2021-12-14 15:00:48,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:48,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29586936] [2021-12-14 15:00:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:48,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 15:00:48,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:48,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29586936] [2021-12-14 15:00:48,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29586936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:48,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:48,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:00:48,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103206984] [2021-12-14 15:00:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:48,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:00:48,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:48,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:00:48,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:00:48,979 INFO L87 Difference]: Start difference. First operand 26866 states and 38481 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 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) [2021-12-14 15:00:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:52,173 INFO L93 Difference]: Finished difference Result 111648 states and 160328 transitions. [2021-12-14 15:00:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:00:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 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 111 [2021-12-14 15:00:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:52,313 INFO L225 Difference]: With dead ends: 111648 [2021-12-14 15:00:52,313 INFO L226 Difference]: Without dead ends: 98238 [2021-12-14 15:00:52,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:00:52,349 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1238 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:52,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 984 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:00:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98238 states. [2021-12-14 15:00:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98238 to 46994. [2021-12-14 15:00:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46994 states, 46993 states have (on average 1.426616730151299) internal successors, (67041), 46993 states have internal predecessors, (67041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46994 states to 46994 states and 67041 transitions. [2021-12-14 15:00:54,819 INFO L78 Accepts]: Start accepts. Automaton has 46994 states and 67041 transitions. Word has length 111 [2021-12-14 15:00:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:00:54,820 INFO L470 AbstractCegarLoop]: Abstraction has 46994 states and 67041 transitions. [2021-12-14 15:00:54,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 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) [2021-12-14 15:00:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 46994 states and 67041 transitions. [2021-12-14 15:00:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 15:00:54,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:00:54,829 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:00:54,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:00:54,829 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:00:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:00:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash -47809913, now seen corresponding path program 1 times [2021-12-14 15:00:54,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:00:54,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243162894] [2021-12-14 15:00:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:00:54,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:00:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:00:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-14 15:00:54,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:00:54,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243162894] [2021-12-14 15:00:54,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243162894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:00:54,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:00:54,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:00:54,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541443798] [2021-12-14 15:00:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:00:54,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:00:54,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:00:54,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:00:54,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:00:54,893 INFO L87 Difference]: Start difference. First operand 46994 states and 67041 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:00:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:00:58,984 INFO L93 Difference]: Finished difference Result 125056 states and 179464 transitions. [2021-12-14 15:00:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:00:58,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-14 15:00:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:00:59,194 INFO L225 Difference]: With dead ends: 125056 [2021-12-14 15:00:59,195 INFO L226 Difference]: Without dead ends: 111646 [2021-12-14 15:00:59,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:00:59,244 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1209 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:00:59,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 1024 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:00:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111646 states. [2021-12-14 15:01:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111646 to 60402. [2021-12-14 15:01:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60402 states, 60401 states have (on average 1.4267479015248092) internal successors, (86177), 60401 states have internal predecessors, (86177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60402 states to 60402 states and 86177 transitions. [2021-12-14 15:01:02,451 INFO L78 Accepts]: Start accepts. Automaton has 60402 states and 86177 transitions. Word has length 111 [2021-12-14 15:01:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:01:02,451 INFO L470 AbstractCegarLoop]: Abstraction has 60402 states and 86177 transitions. [2021-12-14 15:01:02,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 60402 states and 86177 transitions. [2021-12-14 15:01:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 15:01:02,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:01:02,461 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:01:02,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 15:01:02,462 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:01:02,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:01:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1283268953, now seen corresponding path program 1 times [2021-12-14 15:01:02,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:01:02,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590697017] [2021-12-14 15:01:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:01:02,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:01:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:01:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 15:01:02,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:01:02,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590697017] [2021-12-14 15:01:02,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590697017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:01:02,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:01:02,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:01:02,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542188834] [2021-12-14 15:01:02,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:01:02,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:01:02,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:01:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:01:02,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:01:02,540 INFO L87 Difference]: Start difference. First operand 60402 states and 86177 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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) [2021-12-14 15:01:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:01:07,507 INFO L93 Difference]: Finished difference Result 138464 states and 198600 transitions. [2021-12-14 15:01:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:01:07,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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 111 [2021-12-14 15:01:07,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:01:07,705 INFO L225 Difference]: With dead ends: 138464 [2021-12-14 15:01:07,705 INFO L226 Difference]: Without dead ends: 125054 [2021-12-14 15:01:07,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:01:07,737 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1278 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:01:07,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1059 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:01:07,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125054 states. [2021-12-14 15:01:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125054 to 73810. [2021-12-14 15:01:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73810 states, 73809 states have (on average 1.4268314162229538) internal successors, (105313), 73809 states have internal predecessors, (105313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73810 states to 73810 states and 105313 transitions. [2021-12-14 15:01:11,478 INFO L78 Accepts]: Start accepts. Automaton has 73810 states and 105313 transitions. Word has length 111 [2021-12-14 15:01:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:01:11,478 INFO L470 AbstractCegarLoop]: Abstraction has 73810 states and 105313 transitions. [2021-12-14 15:01:11,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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) [2021-12-14 15:01:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 73810 states and 105313 transitions. [2021-12-14 15:01:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 15:01:11,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:01:11,491 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:01:11,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 15:01:11,491 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:01:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:01:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1590702791, now seen corresponding path program 1 times [2021-12-14 15:01:11,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:01:11,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538231826] [2021-12-14 15:01:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:01:11,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:01:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:01:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 15:01:11,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:01:11,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538231826] [2021-12-14 15:01:11,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538231826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:01:11,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:01:11,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:01:11,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687555254] [2021-12-14 15:01:11,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:01:11,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:01:11,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:01:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:01:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:01:11,564 INFO L87 Difference]: Start difference. First operand 73810 states and 105313 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:01:17,794 INFO L93 Difference]: Finished difference Result 151872 states and 217736 transitions. [2021-12-14 15:01:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:01:17,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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 111 [2021-12-14 15:01:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:01:18,033 INFO L225 Difference]: With dead ends: 151872 [2021-12-14 15:01:18,034 INFO L226 Difference]: Without dead ends: 138462 [2021-12-14 15:01:18,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:01:18,071 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1387 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:01:18,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 1029 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:01:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138462 states. [2021-12-14 15:01:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138462 to 87218. [2021-12-14 15:01:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87218 states, 87217 states have (on average 1.426889253241914) internal successors, (124449), 87217 states have internal predecessors, (124449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87218 states to 87218 states and 124449 transitions. [2021-12-14 15:01:23,065 INFO L78 Accepts]: Start accepts. Automaton has 87218 states and 124449 transitions. Word has length 111 [2021-12-14 15:01:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:01:23,066 INFO L470 AbstractCegarLoop]: Abstraction has 87218 states and 124449 transitions. [2021-12-14 15:01:23,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 87218 states and 124449 transitions. [2021-12-14 15:01:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 15:01:23,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:01:23,078 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:01:23,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 15:01:23,078 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:01:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:01:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1024882407, now seen corresponding path program 1 times [2021-12-14 15:01:23,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:01:23,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136545972] [2021-12-14 15:01:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:01:23,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:01:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:01:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 15:01:23,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:01:23,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136545972] [2021-12-14 15:01:23,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136545972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:01:23,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:01:23,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:01:23,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782156165] [2021-12-14 15:01:23,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:01:23,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:01:23,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:01:23,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:01:23,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:01:23,146 INFO L87 Difference]: Start difference. First operand 87218 states and 124449 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:01:30,289 INFO L93 Difference]: Finished difference Result 160480 states and 230152 transitions. [2021-12-14 15:01:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:01:30,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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 111 [2021-12-14 15:01:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:01:30,539 INFO L225 Difference]: With dead ends: 160480 [2021-12-14 15:01:30,539 INFO L226 Difference]: Without dead ends: 149470 [2021-12-14 15:01:30,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-14 15:01:30,581 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1386 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:01:30,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 938 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:01:30,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149470 states. [2021-12-14 15:01:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149470 to 98226. [2021-12-14 15:01:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98226 states, 98225 states have (on average 1.4279155001272588) internal successors, (140257), 98225 states have internal predecessors, (140257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98226 states to 98226 states and 140257 transitions. [2021-12-14 15:01:36,531 INFO L78 Accepts]: Start accepts. Automaton has 98226 states and 140257 transitions. Word has length 111 [2021-12-14 15:01:36,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:01:36,531 INFO L470 AbstractCegarLoop]: Abstraction has 98226 states and 140257 transitions. [2021-12-14 15:01:36,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:36,532 INFO L276 IsEmpty]: Start isEmpty. Operand 98226 states and 140257 transitions. [2021-12-14 15:01:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:01:36,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:01:36,544 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:01:36,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 15:01:36,545 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:01:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:01:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1441172198, now seen corresponding path program 1 times [2021-12-14 15:01:36,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:01:36,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149086262] [2021-12-14 15:01:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:01:36,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:01:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:01:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:01:36,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:01:36,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149086262] [2021-12-14 15:01:36,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149086262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:01:36,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:01:36,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:01:36,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481991047] [2021-12-14 15:01:36,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:01:36,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:01:36,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:01:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:01:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:01:36,597 INFO L87 Difference]: Start difference. First operand 98226 states and 140257 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:01:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:01:41,654 INFO L93 Difference]: Finished difference Result 196406 states and 280467 transitions. [2021-12-14 15:01:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:01:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-12-14 15:01:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:01:41,805 INFO L225 Difference]: With dead ends: 196406 [2021-12-14 15:01:41,805 INFO L226 Difference]: Without dead ends: 98228 [2021-12-14 15:01:41,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:01:41,863 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 60 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:01:41,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 305 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:01:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98228 states.