./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/locks/test_locks_11.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 dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 23:16:35,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 23:16:35,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 23:16:35,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 23:16:35,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 23:16:35,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 23:16:35,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 23:16:35,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 23:16:35,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 23:16:35,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 23:16:35,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 23:16:35,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 23:16:35,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 23:16:35,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 23:16:35,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 23:16:35,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 23:16:35,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 23:16:35,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 23:16:35,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 23:16:35,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 23:16:35,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 23:16:35,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 23:16:35,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 23:16:35,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 23:16:35,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 23:16:35,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 23:16:35,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 23:16:35,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 23:16:35,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 23:16:35,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 23:16:35,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 23:16:35,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 23:16:35,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 23:16:35,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 23:16:35,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 23:16:35,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 23:16:35,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 23:16:35,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 23:16:35,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 23:16:35,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 23:16:35,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 23:16:35,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-13 23:16:35,182 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 23:16:35,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 23:16:35,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 23:16:35,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 23:16:35,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 23:16:35,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 23:16:35,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 23:16:35,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 23:16:35,184 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 23:16:35,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 23:16:35,185 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 23:16:35,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-13 23:16:35,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 23:16:35,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 23:16:35,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 23:16:35,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 23:16:35,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 23:16:35,186 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 23:16:35,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 23:16:35,187 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 23:16:35,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 23:16:35,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 23:16:35,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 23:16:35,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 23:16:35,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:16:35,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 23:16:35,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 23:16:35,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 23:16:35,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 23:16:35,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-13 23:16:35,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 23:16:35,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 23:16:35,189 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 23:16:35,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 23:16:35,189 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 23:16:35,189 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 [2023-02-13 23:16:35,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 23:16:35,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 23:16:35,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 23:16:35,415 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 23:16:35,415 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 23:16:35,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_11.c [2023-02-13 23:16:36,325 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 23:16:36,459 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 23:16:36,459 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c [2023-02-13 23:16:36,464 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd87cdab/fe1e94d495094c2c97824de834ee9c85/FLAGe33d89aff [2023-02-13 23:16:36,477 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd87cdab/fe1e94d495094c2c97824de834ee9c85 [2023-02-13 23:16:36,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 23:16:36,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 23:16:36,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 23:16:36,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 23:16:36,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 23:16:36,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34402afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36, skipping insertion in model container [2023-02-13 23:16:36,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 23:16:36,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 23:16:36,644 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2023-02-13 23:16:36,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:16:36,653 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 23:16:36,668 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2023-02-13 23:16:36,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:16:36,676 INFO L208 MainTranslator]: Completed translation [2023-02-13 23:16:36,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36 WrapperNode [2023-02-13 23:16:36,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 23:16:36,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 23:16:36,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 23:16:36,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 23:16:36,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,697 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2023-02-13 23:16:36,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 23:16:36,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 23:16:36,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 23:16:36,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 23:16:36,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 23:16:36,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 23:16:36,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 23:16:36,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 23:16:36,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (1/1) ... [2023-02-13 23:16:36,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:16:36,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:16:36,754 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) [2023-02-13 23:16:36,762 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 [2023-02-13 23:16:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 23:16:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 23:16:36,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 23:16:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-13 23:16:36,817 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 23:16:36,818 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 23:16:36,951 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 23:16:36,955 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 23:16:36,955 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-13 23:16:36,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:16:36 BoogieIcfgContainer [2023-02-13 23:16:36,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 23:16:36,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 23:16:36,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 23:16:36,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 23:16:36,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 11:16:36" (1/3) ... [2023-02-13 23:16:36,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1420439e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:16:36, skipping insertion in model container [2023-02-13 23:16:36,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:16:36" (2/3) ... [2023-02-13 23:16:36,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1420439e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:16:36, skipping insertion in model container [2023-02-13 23:16:36,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:16:36" (3/3) ... [2023-02-13 23:16:36,962 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2023-02-13 23:16:36,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 23:16:36,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-13 23:16:37,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 23:16:37,006 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@154fa12b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 23:16:37,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-13 23:16:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 42 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) [2023-02-13 23:16:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-13 23:16:37,013 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash 458919617, now seen corresponding path program 1 times [2023-02-13 23:16:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209393952] [2023-02-13 23:16:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209393952] [2023-02-13 23:16:37,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209393952] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093841444] [2023-02-13 23:16:37,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,267 INFO L87 Difference]: Start difference. First operand has 43 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 42 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) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,309 INFO L93 Difference]: Finished difference Result 89 states and 157 transitions. [2023-02-13 23:16:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-13 23:16:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,317 INFO L225 Difference]: With dead ends: 89 [2023-02-13 23:16:37,317 INFO L226 Difference]: Without dead ends: 75 [2023-02-13 23:16:37,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,327 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 151 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 [2023-02-13 23:16:37,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-13 23:16:37,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2023-02-13 23:16:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.88) internal successors, (94), 50 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 94 transitions. [2023-02-13 23:16:37,352 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 94 transitions. Word has length 18 [2023-02-13 23:16:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,353 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 94 transitions. [2023-02-13 23:16:37,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 94 transitions. [2023-02-13 23:16:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-13 23:16:37,354 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-13 23:16:37,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash -552197633, now seen corresponding path program 1 times [2023-02-13 23:16:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710471212] [2023-02-13 23:16:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710471212] [2023-02-13 23:16:37,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710471212] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422640544] [2023-02-13 23:16:37,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,405 INFO L87 Difference]: Start difference. First operand 51 states and 94 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,425 INFO L93 Difference]: Finished difference Result 124 states and 229 transitions. [2023-02-13 23:16:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-13 23:16:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,426 INFO L225 Difference]: With dead ends: 124 [2023-02-13 23:16:37,426 INFO L226 Difference]: Without dead ends: 75 [2023-02-13 23:16:37,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,427 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 53 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:37,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 157 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-13 23:16:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2023-02-13 23:16:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.8611111111111112) internal successors, (134), 72 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 134 transitions. [2023-02-13 23:16:37,434 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 134 transitions. Word has length 18 [2023-02-13 23:16:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,435 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 134 transitions. [2023-02-13 23:16:37,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 134 transitions. [2023-02-13 23:16:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-13 23:16:37,436 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-13 23:16:37,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1341819263, now seen corresponding path program 1 times [2023-02-13 23:16:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612751051] [2023-02-13 23:16:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612751051] [2023-02-13 23:16:37,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612751051] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134761249] [2023-02-13 23:16:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,505 INFO L87 Difference]: Start difference. First operand 73 states and 134 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,517 INFO L93 Difference]: Finished difference Result 114 states and 204 transitions. [2023-02-13 23:16:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-13 23:16:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,519 INFO L225 Difference]: With dead ends: 114 [2023-02-13 23:16:37,519 INFO L226 Difference]: Without dead ends: 78 [2023-02-13 23:16:37,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,520 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 55 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:37,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-13 23:16:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-02-13 23:16:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.8133333333333332) internal successors, (136), 75 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 136 transitions. [2023-02-13 23:16:37,527 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 136 transitions. Word has length 19 [2023-02-13 23:16:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,532 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 136 transitions. [2023-02-13 23:16:37,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,533 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 136 transitions. [2023-02-13 23:16:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-13 23:16:37,533 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-13 23:16:37,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash 61955585, now seen corresponding path program 1 times [2023-02-13 23:16:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538177442] [2023-02-13 23:16:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538177442] [2023-02-13 23:16:37,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538177442] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954188177] [2023-02-13 23:16:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,597 INFO L87 Difference]: Start difference. First operand 76 states and 136 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,614 INFO L93 Difference]: Finished difference Result 145 states and 261 transitions. [2023-02-13 23:16:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-13 23:16:37,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,616 INFO L225 Difference]: With dead ends: 145 [2023-02-13 23:16:37,616 INFO L226 Difference]: Without dead ends: 143 [2023-02-13 23:16:37,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,617 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 50 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 137 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 [2023-02-13 23:16:37,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-02-13 23:16:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2023-02-13 23:16:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.81) internal successors, (181), 100 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) [2023-02-13 23:16:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 181 transitions. [2023-02-13 23:16:37,625 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 181 transitions. Word has length 19 [2023-02-13 23:16:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,625 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 181 transitions. [2023-02-13 23:16:37,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 181 transitions. [2023-02-13 23:16:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-13 23:16:37,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-13 23:16:37,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,627 INFO L85 PathProgramCache]: Analyzing trace with hash -949161665, now seen corresponding path program 1 times [2023-02-13 23:16:37,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259994671] [2023-02-13 23:16:37,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259994671] [2023-02-13 23:16:37,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259994671] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505406518] [2023-02-13 23:16:37,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,703 INFO L87 Difference]: Start difference. First operand 101 states and 181 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,726 INFO L93 Difference]: Finished difference Result 241 states and 435 transitions. [2023-02-13 23:16:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-13 23:16:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,728 INFO L225 Difference]: With dead ends: 241 [2023-02-13 23:16:37,728 INFO L226 Difference]: Without dead ends: 145 [2023-02-13 23:16:37,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,729 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 52 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:37,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 158 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-13 23:16:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2023-02-13 23:16:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.795774647887324) internal successors, (255), 142 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 255 transitions. [2023-02-13 23:16:37,739 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 255 transitions. Word has length 19 [2023-02-13 23:16:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,739 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 255 transitions. [2023-02-13 23:16:37,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 255 transitions. [2023-02-13 23:16:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-13 23:16:37,740 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-13 23:16:37,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1920836500, now seen corresponding path program 1 times [2023-02-13 23:16:37,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076699666] [2023-02-13 23:16:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076699666] [2023-02-13 23:16:37,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076699666] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369022279] [2023-02-13 23:16:37,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,767 INFO L87 Difference]: Start difference. First operand 143 states and 255 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,786 INFO L93 Difference]: Finished difference Result 216 states and 382 transitions. [2023-02-13 23:16:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-13 23:16:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,788 INFO L225 Difference]: With dead ends: 216 [2023-02-13 23:16:37,788 INFO L226 Difference]: Without dead ends: 147 [2023-02-13 23:16:37,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,790 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 54 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:37,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-02-13 23:16:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2023-02-13 23:16:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7708333333333333) internal successors, (255), 144 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 255 transitions. [2023-02-13 23:16:37,808 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 255 transitions. Word has length 20 [2023-02-13 23:16:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,808 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 255 transitions. [2023-02-13 23:16:37,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 255 transitions. [2023-02-13 23:16:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-13 23:16:37,809 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-13 23:16:37,810 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,813 INFO L85 PathProgramCache]: Analyzing trace with hash 640972822, now seen corresponding path program 1 times [2023-02-13 23:16:37,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741068521] [2023-02-13 23:16:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741068521] [2023-02-13 23:16:37,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741068521] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24929725] [2023-02-13 23:16:37,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,852 INFO L87 Difference]: Start difference. First operand 145 states and 255 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,873 INFO L93 Difference]: Finished difference Result 417 states and 737 transitions. [2023-02-13 23:16:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-13 23:16:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,875 INFO L225 Difference]: With dead ends: 417 [2023-02-13 23:16:37,875 INFO L226 Difference]: Without dead ends: 279 [2023-02-13 23:16:37,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,879 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 52 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:37,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 139 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-02-13 23:16:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2023-02-13 23:16:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.75) internal successors, (483), 276 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 483 transitions. [2023-02-13 23:16:37,905 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 483 transitions. Word has length 20 [2023-02-13 23:16:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,906 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 483 transitions. [2023-02-13 23:16:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 483 transitions. [2023-02-13 23:16:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-13 23:16:37,909 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-13 23:16:37,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1652090072, now seen corresponding path program 1 times [2023-02-13 23:16:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375325548] [2023-02-13 23:16:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:37,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:37,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375325548] [2023-02-13 23:16:37,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375325548] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:37,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:37,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358675216] [2023-02-13 23:16:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:37,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:37,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,933 INFO L87 Difference]: Start difference. First operand 277 states and 483 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:37,947 INFO L93 Difference]: Finished difference Result 353 states and 621 transitions. [2023-02-13 23:16:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:37,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-13 23:16:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:37,950 INFO L225 Difference]: With dead ends: 353 [2023-02-13 23:16:37,951 INFO L226 Difference]: Without dead ends: 351 [2023-02-13 23:16:37,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:37,952 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 47 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:37,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 188 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-02-13 23:16:37,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 277. [2023-02-13 23:16:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.7355072463768115) internal successors, (479), 276 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 479 transitions. [2023-02-13 23:16:37,968 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 479 transitions. Word has length 20 [2023-02-13 23:16:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:37,968 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 479 transitions. [2023-02-13 23:16:37,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 479 transitions. [2023-02-13 23:16:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-13 23:16:37,973 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:37,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:37,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-13 23:16:37,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1604465292, now seen corresponding path program 1 times [2023-02-13 23:16:37,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:37,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272131724] [2023-02-13 23:16:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:37,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272131724] [2023-02-13 23:16:38,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272131724] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035541769] [2023-02-13 23:16:38,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,008 INFO L87 Difference]: Start difference. First operand 277 states and 479 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,022 INFO L93 Difference]: Finished difference Result 517 states and 905 transitions. [2023-02-13 23:16:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-13 23:16:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,025 INFO L225 Difference]: With dead ends: 517 [2023-02-13 23:16:38,025 INFO L226 Difference]: Without dead ends: 515 [2023-02-13 23:16:38,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,026 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 44 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 133 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 [2023-02-13 23:16:38,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 133 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-02-13 23:16:38,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 385. [2023-02-13 23:16:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.7057291666666667) internal successors, (655), 384 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 655 transitions. [2023-02-13 23:16:38,037 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 655 transitions. Word has length 21 [2023-02-13 23:16:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,037 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 655 transitions. [2023-02-13 23:16:38,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 655 transitions. [2023-02-13 23:16:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-13 23:16:38,038 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-13 23:16:38,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1679384754, now seen corresponding path program 1 times [2023-02-13 23:16:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329736252] [2023-02-13 23:16:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329736252] [2023-02-13 23:16:38,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329736252] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025880033] [2023-02-13 23:16:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,083 INFO L87 Difference]: Start difference. First operand 385 states and 655 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,098 INFO L93 Difference]: Finished difference Result 917 states and 1569 transitions. [2023-02-13 23:16:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-13 23:16:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,100 INFO L225 Difference]: With dead ends: 917 [2023-02-13 23:16:38,100 INFO L226 Difference]: Without dead ends: 539 [2023-02-13 23:16:38,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,101 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 50 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:38,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 160 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-02-13 23:16:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2023-02-13 23:16:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.6921641791044777) internal successors, (907), 536 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 907 transitions. [2023-02-13 23:16:38,112 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 907 transitions. Word has length 21 [2023-02-13 23:16:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,112 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 907 transitions. [2023-02-13 23:16:38,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 907 transitions. [2023-02-13 23:16:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-13 23:16:38,113 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-13 23:16:38,114 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1801397547, now seen corresponding path program 1 times [2023-02-13 23:16:38,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479096948] [2023-02-13 23:16:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479096948] [2023-02-13 23:16:38,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479096948] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789896089] [2023-02-13 23:16:38,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,146 INFO L87 Difference]: Start difference. First operand 537 states and 907 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,158 INFO L93 Difference]: Finished difference Result 813 states and 1369 transitions. [2023-02-13 23:16:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-13 23:16:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,160 INFO L225 Difference]: With dead ends: 813 [2023-02-13 23:16:38,161 INFO L226 Difference]: Without dead ends: 551 [2023-02-13 23:16:38,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,163 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 52 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:38,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 164 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-02-13 23:16:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2023-02-13 23:16:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.6697080291970803) internal successors, (915), 548 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 915 transitions. [2023-02-13 23:16:38,173 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 915 transitions. Word has length 22 [2023-02-13 23:16:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,173 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 915 transitions. [2023-02-13 23:16:38,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 915 transitions. [2023-02-13 23:16:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-13 23:16:38,176 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-13 23:16:38,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash 521533869, now seen corresponding path program 1 times [2023-02-13 23:16:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376090410] [2023-02-13 23:16:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376090410] [2023-02-13 23:16:38,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376090410] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958927607] [2023-02-13 23:16:38,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,202 INFO L87 Difference]: Start difference. First operand 549 states and 915 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,256 INFO L93 Difference]: Finished difference Result 1001 states and 1693 transitions. [2023-02-13 23:16:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-13 23:16:38,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,260 INFO L225 Difference]: With dead ends: 1001 [2023-02-13 23:16:38,260 INFO L226 Difference]: Without dead ends: 999 [2023-02-13 23:16:38,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,261 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 41 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 131 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 [2023-02-13 23:16:38,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-02-13 23:16:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 773. [2023-02-13 23:16:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.6308290155440415) internal successors, (1259), 772 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1259 transitions. [2023-02-13 23:16:38,277 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1259 transitions. Word has length 22 [2023-02-13 23:16:38,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,277 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1259 transitions. [2023-02-13 23:16:38,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1259 transitions. [2023-02-13 23:16:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-13 23:16:38,278 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-13 23:16:38,278 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash -489583381, now seen corresponding path program 1 times [2023-02-13 23:16:38,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514731311] [2023-02-13 23:16:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514731311] [2023-02-13 23:16:38,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514731311] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134019788] [2023-02-13 23:16:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,307 INFO L87 Difference]: Start difference. First operand 773 states and 1259 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,325 INFO L93 Difference]: Finished difference Result 1817 states and 2973 transitions. [2023-02-13 23:16:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-13 23:16:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,328 INFO L225 Difference]: With dead ends: 1817 [2023-02-13 23:16:38,328 INFO L226 Difference]: Without dead ends: 1063 [2023-02-13 23:16:38,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,329 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 49 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:38,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 161 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-02-13 23:16:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2023-02-13 23:16:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.6179245283018868) internal successors, (1715), 1060 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1715 transitions. [2023-02-13 23:16:38,347 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1715 transitions. Word has length 22 [2023-02-13 23:16:38,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,347 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1715 transitions. [2023-02-13 23:16:38,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1715 transitions. [2023-02-13 23:16:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-13 23:16:38,348 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-13 23:16:38,348 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1012104857, now seen corresponding path program 1 times [2023-02-13 23:16:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10218112] [2023-02-13 23:16:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10218112] [2023-02-13 23:16:38,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10218112] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536145157] [2023-02-13 23:16:38,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,364 INFO L87 Difference]: Start difference. First operand 1061 states and 1715 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,382 INFO L93 Difference]: Finished difference Result 1593 states and 2565 transitions. [2023-02-13 23:16:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-13 23:16:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,385 INFO L225 Difference]: With dead ends: 1593 [2023-02-13 23:16:38,385 INFO L226 Difference]: Without dead ends: 1079 [2023-02-13 23:16:38,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,386 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:38,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-02-13 23:16:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2023-02-13 23:16:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.5938661710037174) internal successors, (1715), 1076 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1715 transitions. [2023-02-13 23:16:38,405 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1715 transitions. Word has length 23 [2023-02-13 23:16:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,405 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1715 transitions. [2023-02-13 23:16:38,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1715 transitions. [2023-02-13 23:16:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-13 23:16:38,406 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-13 23:16:38,406 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2002998761, now seen corresponding path program 1 times [2023-02-13 23:16:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145337128] [2023-02-13 23:16:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145337128] [2023-02-13 23:16:38,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145337128] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775793250] [2023-02-13 23:16:38,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,423 INFO L87 Difference]: Start difference. First operand 1077 states and 1715 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,448 INFO L93 Difference]: Finished difference Result 1929 states and 3125 transitions. [2023-02-13 23:16:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-13 23:16:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,452 INFO L225 Difference]: With dead ends: 1929 [2023-02-13 23:16:38,452 INFO L226 Difference]: Without dead ends: 1927 [2023-02-13 23:16:38,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,453 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 129 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 [2023-02-13 23:16:38,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 129 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-02-13 23:16:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1541. [2023-02-13 23:16:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.55) internal successors, (2387), 1540 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2387 transitions. [2023-02-13 23:16:38,479 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2387 transitions. Word has length 23 [2023-02-13 23:16:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,480 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2387 transitions. [2023-02-13 23:16:38,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2387 transitions. [2023-02-13 23:16:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-13 23:16:38,481 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-13 23:16:38,481 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash 991881511, now seen corresponding path program 1 times [2023-02-13 23:16:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737434334] [2023-02-13 23:16:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737434334] [2023-02-13 23:16:38,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737434334] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241434000] [2023-02-13 23:16:38,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,496 INFO L87 Difference]: Start difference. First operand 1541 states and 2387 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,540 INFO L93 Difference]: Finished difference Result 3593 states and 5589 transitions. [2023-02-13 23:16:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-13 23:16:38,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,545 INFO L225 Difference]: With dead ends: 3593 [2023-02-13 23:16:38,545 INFO L226 Difference]: Without dead ends: 2087 [2023-02-13 23:16:38,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,546 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 48 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:38,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2023-02-13 23:16:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2085. [2023-02-13 23:16:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2084 states have (on average 1.5369481765834934) internal successors, (3203), 2084 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3203 transitions. [2023-02-13 23:16:38,582 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3203 transitions. Word has length 23 [2023-02-13 23:16:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,582 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3203 transitions. [2023-02-13 23:16:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3203 transitions. [2023-02-13 23:16:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-13 23:16:38,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-13 23:16:38,583 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1963634176, now seen corresponding path program 1 times [2023-02-13 23:16:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559683764] [2023-02-13 23:16:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559683764] [2023-02-13 23:16:38,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559683764] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675785018] [2023-02-13 23:16:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,603 INFO L87 Difference]: Start difference. First operand 2085 states and 3203 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,633 INFO L93 Difference]: Finished difference Result 3129 states and 4789 transitions. [2023-02-13 23:16:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-13 23:16:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,637 INFO L225 Difference]: With dead ends: 3129 [2023-02-13 23:16:38,637 INFO L226 Difference]: Without dead ends: 2119 [2023-02-13 23:16:38,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,640 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 50 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:38,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2023-02-13 23:16:38,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 2117. [2023-02-13 23:16:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2116 states have (on average 1.5137051039697542) internal successors, (3203), 2116 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3203 transitions. [2023-02-13 23:16:38,681 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3203 transitions. Word has length 24 [2023-02-13 23:16:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,681 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 3203 transitions. [2023-02-13 23:16:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3203 transitions. [2023-02-13 23:16:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-13 23:16:38,682 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-13 23:16:38,683 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,683 INFO L85 PathProgramCache]: Analyzing trace with hash 683770498, now seen corresponding path program 1 times [2023-02-13 23:16:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545276409] [2023-02-13 23:16:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545276409] [2023-02-13 23:16:38,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545276409] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895769627] [2023-02-13 23:16:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,699 INFO L87 Difference]: Start difference. First operand 2117 states and 3203 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,740 INFO L93 Difference]: Finished difference Result 3721 states and 5733 transitions. [2023-02-13 23:16:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-13 23:16:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,765 INFO L225 Difference]: With dead ends: 3721 [2023-02-13 23:16:38,765 INFO L226 Difference]: Without dead ends: 3719 [2023-02-13 23:16:38,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,767 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 127 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 [2023-02-13 23:16:38,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 127 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2023-02-13 23:16:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3077. [2023-02-13 23:16:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 1.467815344603381) internal successors, (4515), 3076 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4515 transitions. [2023-02-13 23:16:38,819 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4515 transitions. Word has length 24 [2023-02-13 23:16:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:38,819 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4515 transitions. [2023-02-13 23:16:38,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4515 transitions. [2023-02-13 23:16:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-13 23:16:38,822 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:38,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-13 23:16:38,822 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:38,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash -327346752, now seen corresponding path program 1 times [2023-02-13 23:16:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:38,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066878766] [2023-02-13 23:16:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:38,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:38,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066878766] [2023-02-13 23:16:38,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066878766] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:38,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:38,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:38,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069890218] [2023-02-13 23:16:38,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:38,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:38,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,845 INFO L87 Difference]: Start difference. First operand 3077 states and 4515 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:38,909 INFO L93 Difference]: Finished difference Result 7113 states and 10469 transitions. [2023-02-13 23:16:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-13 23:16:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:38,918 INFO L225 Difference]: With dead ends: 7113 [2023-02-13 23:16:38,918 INFO L226 Difference]: Without dead ends: 4103 [2023-02-13 23:16:38,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:38,921 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 47 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:38,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2023-02-13 23:16:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2023-02-13 23:16:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4100 states have (on average 1.4524390243902439) internal successors, (5955), 4100 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5955 transitions. [2023-02-13 23:16:39,017 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5955 transitions. Word has length 24 [2023-02-13 23:16:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:39,018 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 5955 transitions. [2023-02-13 23:16:39,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5955 transitions. [2023-02-13 23:16:39,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-13 23:16:39,020 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:39,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:39,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-13 23:16:39,020 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash -277735972, now seen corresponding path program 1 times [2023-02-13 23:16:39,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:39,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771100385] [2023-02-13 23:16:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:39,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:39,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:39,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771100385] [2023-02-13 23:16:39,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771100385] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:39,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:39,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:39,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835968821] [2023-02-13 23:16:39,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:39,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:39,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:39,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,034 INFO L87 Difference]: Start difference. First operand 4101 states and 5955 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:39,093 INFO L93 Difference]: Finished difference Result 6153 states and 8901 transitions. [2023-02-13 23:16:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:39,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-13 23:16:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:39,101 INFO L225 Difference]: With dead ends: 6153 [2023-02-13 23:16:39,101 INFO L226 Difference]: Without dead ends: 4167 [2023-02-13 23:16:39,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,103 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:39,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 152 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:39,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-02-13 23:16:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4165. [2023-02-13 23:16:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 1.430115273775216) internal successors, (5955), 4164 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5955 transitions. [2023-02-13 23:16:39,181 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5955 transitions. Word has length 25 [2023-02-13 23:16:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:39,181 INFO L495 AbstractCegarLoop]: Abstraction has 4165 states and 5955 transitions. [2023-02-13 23:16:39,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5955 transitions. [2023-02-13 23:16:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-13 23:16:39,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:39,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-13 23:16:39,186 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1557599650, now seen corresponding path program 1 times [2023-02-13 23:16:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:39,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011043087] [2023-02-13 23:16:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:39,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:39,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011043087] [2023-02-13 23:16:39,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011043087] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:39,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:39,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:39,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634243336] [2023-02-13 23:16:39,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:39,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:39,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,202 INFO L87 Difference]: Start difference. First operand 4165 states and 5955 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:39,307 INFO L93 Difference]: Finished difference Result 7177 states and 10437 transitions. [2023-02-13 23:16:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:39,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-13 23:16:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:39,314 INFO L225 Difference]: With dead ends: 7177 [2023-02-13 23:16:39,314 INFO L226 Difference]: Without dead ends: 7175 [2023-02-13 23:16:39,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,315 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 32 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 125 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 [2023-02-13 23:16:39,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 125 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2023-02-13 23:16:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6149. [2023-02-13 23:16:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 6148 states have (on average 1.385003253090436) internal successors, (8515), 6148 states have internal predecessors, (8515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8515 transitions. [2023-02-13 23:16:39,407 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8515 transitions. Word has length 25 [2023-02-13 23:16:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:39,407 INFO L495 AbstractCegarLoop]: Abstraction has 6149 states and 8515 transitions. [2023-02-13 23:16:39,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8515 transitions. [2023-02-13 23:16:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-13 23:16:39,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:39,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-13 23:16:39,411 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:39,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:39,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1726250396, now seen corresponding path program 1 times [2023-02-13 23:16:39,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:39,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258738863] [2023-02-13 23:16:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:39,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:39,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258738863] [2023-02-13 23:16:39,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258738863] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:39,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926938375] [2023-02-13 23:16:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:39,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:39,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,424 INFO L87 Difference]: Start difference. First operand 6149 states and 8515 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:39,533 INFO L93 Difference]: Finished difference Result 14089 states and 19525 transitions. [2023-02-13 23:16:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:39,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-13 23:16:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:39,541 INFO L225 Difference]: With dead ends: 14089 [2023-02-13 23:16:39,541 INFO L226 Difference]: Without dead ends: 8071 [2023-02-13 23:16:39,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,546 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 46 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:39,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 164 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2023-02-13 23:16:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8069. [2023-02-13 23:16:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8069 states, 8068 states have (on average 1.364774417451661) internal successors, (11011), 8068 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 11011 transitions. [2023-02-13 23:16:39,713 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 11011 transitions. Word has length 25 [2023-02-13 23:16:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:39,713 INFO L495 AbstractCegarLoop]: Abstraction has 8069 states and 11011 transitions. [2023-02-13 23:16:39,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 11011 transitions. [2023-02-13 23:16:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-13 23:16:39,718 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:39,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:39,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-13 23:16:39,719 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1040733483, now seen corresponding path program 1 times [2023-02-13 23:16:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:39,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185921040] [2023-02-13 23:16:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:39,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:39,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185921040] [2023-02-13 23:16:39,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185921040] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:39,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:39,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:39,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045173631] [2023-02-13 23:16:39,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:39,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:39,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:39,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:39,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,735 INFO L87 Difference]: Start difference. First operand 8069 states and 11011 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:39,820 INFO L93 Difference]: Finished difference Result 12105 states and 16453 transitions. [2023-02-13 23:16:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:39,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-02-13 23:16:39,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:39,829 INFO L225 Difference]: With dead ends: 12105 [2023-02-13 23:16:39,829 INFO L226 Difference]: Without dead ends: 8199 [2023-02-13 23:16:39,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:39,834 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:39,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 148 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:39,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2023-02-13 23:16:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8197. [2023-02-13 23:16:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.343460224499756) internal successors, (11011), 8196 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 11011 transitions. [2023-02-13 23:16:40,060 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 11011 transitions. Word has length 26 [2023-02-13 23:16:40,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:40,060 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 11011 transitions. [2023-02-13 23:16:40,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,060 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 11011 transitions. [2023-02-13 23:16:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-13 23:16:40,065 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:40,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:40,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-13 23:16:40,066 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:40,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1974370135, now seen corresponding path program 1 times [2023-02-13 23:16:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:40,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401160762] [2023-02-13 23:16:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:40,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401160762] [2023-02-13 23:16:40,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401160762] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:40,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:40,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200516203] [2023-02-13 23:16:40,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:40,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:40,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:40,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:40,084 INFO L87 Difference]: Start difference. First operand 8197 states and 11011 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:40,258 INFO L93 Difference]: Finished difference Result 13833 states and 18821 transitions. [2023-02-13 23:16:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:40,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-02-13 23:16:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:40,271 INFO L225 Difference]: With dead ends: 13833 [2023-02-13 23:16:40,284 INFO L226 Difference]: Without dead ends: 13831 [2023-02-13 23:16:40,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:40,288 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 29 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 123 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 [2023-02-13 23:16:40,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 123 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2023-02-13 23:16:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 12293. [2023-02-13 23:16:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12293 states, 12292 states have (on average 1.3019036771884152) internal successors, (16003), 12292 states have internal predecessors, (16003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12293 states to 12293 states and 16003 transitions. [2023-02-13 23:16:40,450 INFO L78 Accepts]: Start accepts. Automaton has 12293 states and 16003 transitions. Word has length 26 [2023-02-13 23:16:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:40,450 INFO L495 AbstractCegarLoop]: Abstraction has 12293 states and 16003 transitions. [2023-02-13 23:16:40,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 12293 states and 16003 transitions. [2023-02-13 23:16:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-13 23:16:40,460 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:40,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:40,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-13 23:16:40,460 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash 963252885, now seen corresponding path program 1 times [2023-02-13 23:16:40,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:40,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237709201] [2023-02-13 23:16:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:40,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:40,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237709201] [2023-02-13 23:16:40,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237709201] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:40,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:40,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:40,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962289896] [2023-02-13 23:16:40,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:40,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:40,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:40,474 INFO L87 Difference]: Start difference. First operand 12293 states and 16003 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:40,643 INFO L93 Difference]: Finished difference Result 27913 states and 36229 transitions. [2023-02-13 23:16:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:40,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-02-13 23:16:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:40,659 INFO L225 Difference]: With dead ends: 27913 [2023-02-13 23:16:40,659 INFO L226 Difference]: Without dead ends: 15879 [2023-02-13 23:16:40,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:40,669 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:40,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 165 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2023-02-13 23:16:40,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 15877. [2023-02-13 23:16:40,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15877 states, 15876 states have (on average 1.2740614764424287) internal successors, (20227), 15876 states have internal predecessors, (20227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20227 transitions. [2023-02-13 23:16:40,934 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20227 transitions. Word has length 26 [2023-02-13 23:16:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:40,934 INFO L495 AbstractCegarLoop]: Abstraction has 15877 states and 20227 transitions. [2023-02-13 23:16:40,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20227 transitions. [2023-02-13 23:16:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-13 23:16:41,007 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:41,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:41,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-13 23:16:41,008 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1076147793, now seen corresponding path program 1 times [2023-02-13 23:16:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:41,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422096488] [2023-02-13 23:16:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:41,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:41,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422096488] [2023-02-13 23:16:41,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422096488] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:41,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:41,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:41,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920908916] [2023-02-13 23:16:41,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:41,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:41,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:41,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:41,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:41,035 INFO L87 Difference]: Start difference. First operand 15877 states and 20227 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:41,202 INFO L93 Difference]: Finished difference Result 23817 states and 30213 transitions. [2023-02-13 23:16:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:41,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-02-13 23:16:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:41,220 INFO L225 Difference]: With dead ends: 23817 [2023-02-13 23:16:41,220 INFO L226 Difference]: Without dead ends: 16135 [2023-02-13 23:16:41,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:41,229 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 47 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:41,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16135 states. [2023-02-13 23:16:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16135 to 16133. [2023-02-13 23:16:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16133 states, 16132 states have (on average 1.2538432928341186) internal successors, (20227), 16132 states have internal predecessors, (20227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 20227 transitions. [2023-02-13 23:16:41,519 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 20227 transitions. Word has length 27 [2023-02-13 23:16:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:41,519 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 20227 transitions. [2023-02-13 23:16:41,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 20227 transitions. [2023-02-13 23:16:41,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-13 23:16:41,530 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:41,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:41,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-13 23:16:41,530 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash -203715885, now seen corresponding path program 1 times [2023-02-13 23:16:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:41,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43741246] [2023-02-13 23:16:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:41,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:41,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:41,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43741246] [2023-02-13 23:16:41,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43741246] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:41,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:41,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:41,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853927334] [2023-02-13 23:16:41,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:41,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:41,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:41,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:41,546 INFO L87 Difference]: Start difference. First operand 16133 states and 20227 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:41,785 INFO L93 Difference]: Finished difference Result 26633 states and 33541 transitions. [2023-02-13 23:16:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-02-13 23:16:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:41,813 INFO L225 Difference]: With dead ends: 26633 [2023-02-13 23:16:41,814 INFO L226 Difference]: Without dead ends: 26631 [2023-02-13 23:16:41,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:41,818 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 26 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 121 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 [2023-02-13 23:16:41,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 121 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26631 states. [2023-02-13 23:16:42,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26631 to 24581. [2023-02-13 23:16:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24581 states, 24580 states have (on average 1.2186737184703011) internal successors, (29955), 24580 states have internal predecessors, (29955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24581 states to 24581 states and 29955 transitions. [2023-02-13 23:16:42,217 INFO L78 Accepts]: Start accepts. Automaton has 24581 states and 29955 transitions. Word has length 27 [2023-02-13 23:16:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:42,217 INFO L495 AbstractCegarLoop]: Abstraction has 24581 states and 29955 transitions. [2023-02-13 23:16:42,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 24581 states and 29955 transitions. [2023-02-13 23:16:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-13 23:16:42,239 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:42,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:42,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-13 23:16:42,239 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1214833135, now seen corresponding path program 1 times [2023-02-13 23:16:42,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:42,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211951464] [2023-02-13 23:16:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:42,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211951464] [2023-02-13 23:16:42,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211951464] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:42,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:42,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750162606] [2023-02-13 23:16:42,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:42,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:42,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:42,265 INFO L87 Difference]: Start difference. First operand 24581 states and 29955 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:42,582 INFO L93 Difference]: Finished difference Result 55305 states and 66821 transitions. [2023-02-13 23:16:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-02-13 23:16:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:42,618 INFO L225 Difference]: With dead ends: 55305 [2023-02-13 23:16:42,618 INFO L226 Difference]: Without dead ends: 31239 [2023-02-13 23:16:42,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:42,635 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 44 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:42,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31239 states. [2023-02-13 23:16:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31239 to 31237. [2023-02-13 23:16:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31237 states, 31236 states have (on average 1.1802727621974645) internal successors, (36867), 31236 states have internal predecessors, (36867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31237 states to 31237 states and 36867 transitions. [2023-02-13 23:16:43,224 INFO L78 Accepts]: Start accepts. Automaton has 31237 states and 36867 transitions. Word has length 27 [2023-02-13 23:16:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:43,224 INFO L495 AbstractCegarLoop]: Abstraction has 31237 states and 36867 transitions. [2023-02-13 23:16:43,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 31237 states and 36867 transitions. [2023-02-13 23:16:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-13 23:16:43,239 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:43,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:43,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-13 23:16:43,239 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2020009046, now seen corresponding path program 1 times [2023-02-13 23:16:43,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:43,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571863644] [2023-02-13 23:16:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:43,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:43,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:43,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571863644] [2023-02-13 23:16:43,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571863644] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:43,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:43,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442152818] [2023-02-13 23:16:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:43,255 INFO L87 Difference]: Start difference. First operand 31237 states and 36867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:43,590 INFO L93 Difference]: Finished difference Result 46857 states and 55045 transitions. [2023-02-13 23:16:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:43,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-02-13 23:16:43,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:43,625 INFO L225 Difference]: With dead ends: 46857 [2023-02-13 23:16:43,625 INFO L226 Difference]: Without dead ends: 31751 [2023-02-13 23:16:43,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:43,640 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 46 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:43,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31751 states. [2023-02-13 23:16:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31751 to 31749. [2023-02-13 23:16:44,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31749 states, 31748 states have (on average 1.1612385032128008) internal successors, (36867), 31748 states have internal predecessors, (36867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 36867 transitions. [2023-02-13 23:16:44,175 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 36867 transitions. Word has length 28 [2023-02-13 23:16:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:44,176 INFO L495 AbstractCegarLoop]: Abstraction has 31749 states and 36867 transitions. [2023-02-13 23:16:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 36867 transitions. [2023-02-13 23:16:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-13 23:16:44,190 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:44,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:44,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-13 23:16:44,190 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:44,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:44,191 INFO L85 PathProgramCache]: Analyzing trace with hash 995094572, now seen corresponding path program 1 times [2023-02-13 23:16:44,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:44,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779944374] [2023-02-13 23:16:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:44,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:44,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779944374] [2023-02-13 23:16:44,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779944374] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:44,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:44,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:44,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411732270] [2023-02-13 23:16:44,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:44,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:44,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:44,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:44,212 INFO L87 Difference]: Start difference. First operand 31749 states and 36867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:44,883 INFO L93 Difference]: Finished difference Result 92167 states and 104452 transitions. [2023-02-13 23:16:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:44,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-02-13 23:16:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:44,912 INFO L225 Difference]: With dead ends: 92167 [2023-02-13 23:16:44,913 INFO L226 Difference]: Without dead ends: 31749 [2023-02-13 23:16:44,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:44,935 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 43 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:44,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 138 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31749 states. [2023-02-13 23:16:45,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31749 to 31749. [2023-02-13 23:16:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31749 states, 31748 states have (on average 1.096730502708832) internal successors, (34819), 31748 states have internal predecessors, (34819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 34819 transitions. [2023-02-13 23:16:45,503 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 34819 transitions. Word has length 28 [2023-02-13 23:16:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:45,503 INFO L495 AbstractCegarLoop]: Abstraction has 31749 states and 34819 transitions. [2023-02-13 23:16:45,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 34819 transitions. [2023-02-13 23:16:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-13 23:16:45,518 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:16:45,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:16:45,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-13 23:16:45,518 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:16:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:16:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2006211822, now seen corresponding path program 1 times [2023-02-13 23:16:45,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:16:45,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535817815] [2023-02-13 23:16:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:16:45,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:16:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:16:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:16:45,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:16:45,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535817815] [2023-02-13 23:16:45,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535817815] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:16:45,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:16:45,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:16:45,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143807534] [2023-02-13 23:16:45,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:16:45,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:16:45,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:16:45,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:16:45,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:45,533 INFO L87 Difference]: Start difference. First operand 31749 states and 34819 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:16:45,863 INFO L93 Difference]: Finished difference Result 31749 states and 34819 transitions. [2023-02-13 23:16:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:16:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-02-13 23:16:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:16:45,864 INFO L225 Difference]: With dead ends: 31749 [2023-02-13 23:16:45,864 INFO L226 Difference]: Without dead ends: 0 [2023-02-13 23:16:45,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:16:45,871 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:16:45,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 78 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:16:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-13 23:16:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-13 23:16:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-13 23:16:45,872 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-02-13 23:16:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:16:45,872 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 23:16:45,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 23:16:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-13 23:16:45,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-13 23:16:45,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-13 23:16:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-13 23:16:45,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-13 23:16:45,885 INFO L899 garLoopResultBuilder]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,885 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,885 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,885 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,885 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 179) the Hoare annotation is: true [2023-02-13 23:16:45,885 INFO L899 garLoopResultBuilder]: For program point L135(line 135) no Hoare annotation was computed. [2023-02-13 23:16:45,886 INFO L899 garLoopResultBuilder]: For program point L160(line 160) no Hoare annotation was computed. [2023-02-13 23:16:45,886 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-13 23:16:45,886 INFO L899 garLoopResultBuilder]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,886 INFO L899 garLoopResultBuilder]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,886 INFO L902 garLoopResultBuilder]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2023-02-13 23:16:45,886 INFO L899 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2023-02-13 23:16:45,886 INFO L899 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2023-02-13 23:16:45,886 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L105-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L130(line 130) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,887 INFO L899 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L89-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L81-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L73-2(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2023-02-13 23:16:45,888 INFO L899 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2023-02-13 23:16:45,889 INFO L899 garLoopResultBuilder]: For program point L165(line 165) no Hoare annotation was computed. [2023-02-13 23:16:45,889 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-13 23:16:45,889 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,889 INFO L899 garLoopResultBuilder]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,889 INFO L899 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2023-02-13 23:16:45,889 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 179) the Hoare annotation is: false [2023-02-13 23:16:45,889 INFO L899 garLoopResultBuilder]: For program point L150(line 150) no Hoare annotation was computed. [2023-02-13 23:16:45,889 INFO L902 garLoopResultBuilder]: At program point L175(lines 7 179) the Hoare annotation is: true [2023-02-13 23:16:45,889 INFO L899 garLoopResultBuilder]: For program point L109-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,890 INFO L899 garLoopResultBuilder]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,890 INFO L899 garLoopResultBuilder]: For program point L101-1(lines 44 174) no Hoare annotation was computed. [2023-02-13 23:16:45,892 INFO L445 BasicCegarLoop]: Path program 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] [2023-02-13 23:16:45,893 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-13 23:16:45,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.02 11:16:45 BoogieIcfgContainer [2023-02-13 23:16:45,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-13 23:16:45,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-13 23:16:45,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-13 23:16:45,898 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-13 23:16:45,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:16:36" (3/4) ... [2023-02-13 23:16:45,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-13 23:16:45,907 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-13 23:16:45,907 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-13 23:16:45,907 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-13 23:16:45,907 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-13 23:16:45,930 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-13 23:16:45,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-13 23:16:45,930 INFO L158 Benchmark]: Toolchain (without parser) took 9450.02ms. Allocated memory was 165.7MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 127.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 513.3MB. Max. memory is 16.1GB. [2023-02-13 23:16:45,931 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-13 23:16:45,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.32ms. Allocated memory is still 165.7MB. Free memory was 127.6MB in the beginning and 131.8MB in the end (delta: -4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-13 23:16:45,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.92ms. Allocated memory is still 165.7MB. Free memory was 131.8MB in the beginning and 129.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-13 23:16:45,931 INFO L158 Benchmark]: Boogie Preprocessor took 32.59ms. Allocated memory is still 165.7MB. Free memory was 129.7MB in the beginning and 128.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-13 23:16:45,931 INFO L158 Benchmark]: RCFGBuilder took 226.66ms. Allocated memory is still 165.7MB. Free memory was 128.3MB in the beginning and 113.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-13 23:16:45,931 INFO L158 Benchmark]: TraceAbstraction took 8939.37ms. Allocated memory was 165.7MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 113.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 496.0MB. Max. memory is 16.1GB. [2023-02-13 23:16:45,932 INFO L158 Benchmark]: Witness Printer took 32.11ms. Allocated memory is still 2.1GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-13 23:16:45,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.32ms. Allocated memory is still 165.7MB. Free memory was 127.6MB in the beginning and 131.8MB in the end (delta: -4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.92ms. Allocated memory is still 165.7MB. Free memory was 131.8MB in the beginning and 129.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.59ms. Allocated memory is still 165.7MB. Free memory was 129.7MB in the beginning and 128.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.66ms. Allocated memory is still 165.7MB. Free memory was 128.3MB in the beginning and 113.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8939.37ms. Allocated memory was 165.7MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 113.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 496.0MB. Max. memory is 16.1GB. * Witness Printer took 32.11ms. Allocated memory is still 2.1GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.9s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1400 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1400 mSDsluCounter, 4588 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1835 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 2753 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31749occurred in iteration=29, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 31 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 2057 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 1492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-02-13 23:16:45,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE