./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/eca-rers2012/Problem17_label41.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 f21db4ac76946ee444b77ff65c558a63b1f97c46b1265b72698e02c79e47e23e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:33:09,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:33:09,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:33:09,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:33:09,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:33:09,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:33:09,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:33:09,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:33:09,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:33:09,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:33:09,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:33:09,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:33:09,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:33:09,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:33:09,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:33:09,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:33:09,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:33:09,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:33:09,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:33:09,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:33:09,376 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:33:09,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:33:09,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:33:09,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:33:09,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:33:09,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:33:09,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:33:09,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:33:09,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:33:09,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:33:09,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:33:09,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:33:09,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:33:09,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:33:09,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:33:09,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:33:09,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:33:09,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:33:09,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:33:09,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:33:09,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:33:09,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:33:09,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:33:09,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:33:09,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:33:09,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:33:09,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:33:09,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:33:09,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:33:09,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:33:09,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:33:09,421 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:33:09,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:33:09,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:33:09,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:33:09,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:33:09,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:33:09,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:33:09,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:33:09,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:33:09,423 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:33:09,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:33:09,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:33:09,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:33:09,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:33:09,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:33:09,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:33:09,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:33:09,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:33:09,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:33:09,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:33:09,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:33:09,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:33:09,426 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:33:09,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:33:09,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:33:09,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f21db4ac76946ee444b77ff65c558a63b1f97c46b1265b72698e02c79e47e23e [2022-07-12 01:33:09,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:33:09,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:33:09,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:33:09,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:33:09,612 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:33:09,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label41.c [2022-07-12 01:33:09,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5079f2bfc/cb19c4cdfaec4ecbadadf5b59028076e/FLAG97cfe6fdd [2022-07-12 01:33:10,149 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:33:10,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label41.c [2022-07-12 01:33:10,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5079f2bfc/cb19c4cdfaec4ecbadadf5b59028076e/FLAG97cfe6fdd [2022-07-12 01:33:10,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5079f2bfc/cb19c4cdfaec4ecbadadf5b59028076e [2022-07-12 01:33:10,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:33:10,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:33:10,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:33:10,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:33:10,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:33:10,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:33:10" (1/1) ... [2022-07-12 01:33:10,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44064678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:10, skipping insertion in model container [2022-07-12 01:33:10,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:33:10" (1/1) ... [2022-07-12 01:33:10,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:33:10,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:33:10,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label41.c[5202,5215] [2022-07-12 01:33:10,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:33:10,889 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:33:10,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label41.c[5202,5215] [2022-07-12 01:33:11,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:33:11,185 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:33:11,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11 WrapperNode [2022-07-12 01:33:11,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:33:11,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:33:11,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:33:11,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:33:11,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,449 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-12 01:33:11,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:33:11,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:33:11,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:33:11,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:33:11,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:33:11,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:33:11,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:33:11,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:33:11,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (1/1) ... [2022-07-12 01:33:11,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:33:11,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:11,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 01:33:11,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 01:33:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:33:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:33:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:33:11,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:33:11,878 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:33:11,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:33:14,285 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:33:14,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:33:14,295 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:33:14,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:33:14 BoogieIcfgContainer [2022-07-12 01:33:14,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:33:14,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:33:14,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:33:14,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:33:14,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:33:10" (1/3) ... [2022-07-12 01:33:14,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f2e01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:33:14, skipping insertion in model container [2022-07-12 01:33:14,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:11" (2/3) ... [2022-07-12 01:33:14,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f2e01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:33:14, skipping insertion in model container [2022-07-12 01:33:14,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:33:14" (3/3) ... [2022-07-12 01:33:14,303 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label41.c [2022-07-12 01:33:14,314 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:33:14,314 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:33:14,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:33:14,375 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19f54c0e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c1d9ca5 [2022-07-12 01:33:14,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:33:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 01:33:14,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:14,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:14,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1089129850, now seen corresponding path program 1 times [2022-07-12 01:33:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681565858] [2022-07-12 01:33:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:14,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:14,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681565858] [2022-07-12 01:33:14,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681565858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:14,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:14,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32712179] [2022-07-12 01:33:14,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:14,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:14,591 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:16,850 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-07-12 01:33:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:16,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-12 01:33:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:16,865 INFO L225 Difference]: With dead ends: 1642 [2022-07-12 01:33:16,865 INFO L226 Difference]: Without dead ends: 975 [2022-07-12 01:33:16,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:16,870 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 456 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:16,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 01:33:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-12 01:33:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-07-12 01:33:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-07-12 01:33:16,930 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 34 [2022-07-12 01:33:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:16,931 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-07-12 01:33:16,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-07-12 01:33:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 01:33:16,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:16,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:16,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:33:16,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1564428038, now seen corresponding path program 1 times [2022-07-12 01:33:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:16,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377828398] [2022-07-12 01:33:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:17,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377828398] [2022-07-12 01:33:17,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377828398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:17,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:17,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165285185] [2022-07-12 01:33:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:17,094 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:19,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:19,066 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-07-12 01:33:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:19,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-12 01:33:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:19,088 INFO L225 Difference]: With dead ends: 2814 [2022-07-12 01:33:19,090 INFO L226 Difference]: Without dead ends: 1844 [2022-07-12 01:33:19,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:19,097 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 457 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:19,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 01:33:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-12 01:33:19,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-12 01:33:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-07-12 01:33:19,163 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 104 [2022-07-12 01:33:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:19,166 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-07-12 01:33:19,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-07-12 01:33:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 01:33:19,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:19,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:19,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:33:19,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash -446462935, now seen corresponding path program 1 times [2022-07-12 01:33:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:19,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073117079] [2022-07-12 01:33:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:19,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:19,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:19,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073117079] [2022-07-12 01:33:19,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073117079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:19,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:19,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112306780] [2022-07-12 01:33:19,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:19,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:19,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:19,338 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:20,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:20,922 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-07-12 01:33:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-07-12 01:33:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:20,934 INFO L225 Difference]: With dead ends: 5395 [2022-07-12 01:33:20,935 INFO L226 Difference]: Without dead ends: 2701 [2022-07-12 01:33:20,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:20,937 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:20,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-07-12 01:33:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-07-12 01:33:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-07-12 01:33:20,967 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 126 [2022-07-12 01:33:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:20,968 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-07-12 01:33:20,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:20,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-07-12 01:33:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 01:33:20,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:20,969 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:20,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:33:20,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2125954851, now seen corresponding path program 1 times [2022-07-12 01:33:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:20,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975766755] [2022-07-12 01:33:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:21,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:21,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975766755] [2022-07-12 01:33:21,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975766755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:21,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:21,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:21,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436133956] [2022-07-12 01:33:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:21,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:21,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:21,083 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:22,500 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-07-12 01:33:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2022-07-12 01:33:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:22,516 INFO L225 Difference]: With dead ends: 7108 [2022-07-12 01:33:22,516 INFO L226 Difference]: Without dead ends: 4409 [2022-07-12 01:33:22,519 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 [2022-07-12 01:33:22,525 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:22,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:33:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-07-12 01:33:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-07-12 01:33:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-07-12 01:33:22,600 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 186 [2022-07-12 01:33:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:22,601 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-07-12 01:33:22,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-07-12 01:33:22,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 01:33:22,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:22,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:22,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:33:22,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:22,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash -449786728, now seen corresponding path program 1 times [2022-07-12 01:33:22,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:22,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181112613] [2022-07-12 01:33:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:22,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 01:33:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181112613] [2022-07-12 01:33:22,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181112613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:22,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:22,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:22,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022570389] [2022-07-12 01:33:22,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:22,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:22,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:22,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:22,703 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:24,210 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-07-12 01:33:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 188 [2022-07-12 01:33:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:24,230 INFO L225 Difference]: With dead ends: 10936 [2022-07-12 01:33:24,230 INFO L226 Difference]: Without dead ends: 6528 [2022-07-12 01:33:24,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:24,235 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 417 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:24,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:33:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-07-12 01:33:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-07-12 01:33:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-07-12 01:33:24,296 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 188 [2022-07-12 01:33:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:24,297 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-07-12 01:33:24,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-07-12 01:33:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 01:33:24,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:24,302 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:24,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:33:24,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1367873502, now seen corresponding path program 1 times [2022-07-12 01:33:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:24,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040784908] [2022-07-12 01:33:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:24,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:33:24,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:24,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040784908] [2022-07-12 01:33:24,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040784908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:24,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:24,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548161735] [2022-07-12 01:33:24,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:24,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:24,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:24,444 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:26,095 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2022-07-12 01:33:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:26,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 254 [2022-07-12 01:33:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:26,119 INFO L225 Difference]: With dead ends: 10045 [2022-07-12 01:33:26,119 INFO L226 Difference]: Without dead ends: 5665 [2022-07-12 01:33:26,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:26,124 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 402 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:26,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 01:33:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2022-07-12 01:33:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2022-07-12 01:33:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2022-07-12 01:33:26,183 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 254 [2022-07-12 01:33:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:26,184 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2022-07-12 01:33:26,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2022-07-12 01:33:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-12 01:33:26,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:26,186 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:26,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 01:33:26,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash -176976485, now seen corresponding path program 1 times [2022-07-12 01:33:26,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:26,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498710884] [2022-07-12 01:33:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:26,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 01:33:26,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:26,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498710884] [2022-07-12 01:33:26,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498710884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:26,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:26,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:26,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000772159] [2022-07-12 01:33:26,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:26,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:26,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:26,276 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:27,741 INFO L93 Difference]: Finished difference Result 12593 states and 14783 transitions. [2022-07-12 01:33:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 266 [2022-07-12 01:33:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:27,756 INFO L225 Difference]: With dead ends: 12593 [2022-07-12 01:33:27,756 INFO L226 Difference]: Without dead ends: 6936 [2022-07-12 01:33:27,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:27,760 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:27,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:33:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2022-07-12 01:33:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6936. [2022-07-12 01:33:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6935 states have (on average 1.1322278298485942) internal successors, (7852), 6935 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 7852 transitions. [2022-07-12 01:33:27,843 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 7852 transitions. Word has length 266 [2022-07-12 01:33:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:27,843 INFO L495 AbstractCegarLoop]: Abstraction has 6936 states and 7852 transitions. [2022-07-12 01:33:27,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 7852 transitions. [2022-07-12 01:33:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-12 01:33:27,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:27,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:27,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:33:27,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1724499966, now seen corresponding path program 1 times [2022-07-12 01:33:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:27,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576347106] [2022-07-12 01:33:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 01:33:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:28,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576347106] [2022-07-12 01:33:28,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576347106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:28,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:28,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179531056] [2022-07-12 01:33:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:28,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:28,024 INFO L87 Difference]: Start difference. First operand 6936 states and 7852 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:29,593 INFO L93 Difference]: Finished difference Result 19012 states and 21597 transitions. [2022-07-12 01:33:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 306 [2022-07-12 01:33:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:29,610 INFO L225 Difference]: With dead ends: 19012 [2022-07-12 01:33:29,610 INFO L226 Difference]: Without dead ends: 12078 [2022-07-12 01:33:29,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:29,618 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 471 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:29,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 304 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-07-12 01:33:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 11633. [2022-07-12 01:33:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11633 states, 11632 states have (on average 1.1289546079779917) internal successors, (13132), 11632 states have internal predecessors, (13132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11633 states to 11633 states and 13132 transitions. [2022-07-12 01:33:29,724 INFO L78 Accepts]: Start accepts. Automaton has 11633 states and 13132 transitions. Word has length 306 [2022-07-12 01:33:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:29,725 INFO L495 AbstractCegarLoop]: Abstraction has 11633 states and 13132 transitions. [2022-07-12 01:33:29,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 11633 states and 13132 transitions. [2022-07-12 01:33:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-07-12 01:33:29,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:29,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:29,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 01:33:29,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:29,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1272834621, now seen corresponding path program 1 times [2022-07-12 01:33:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:29,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645138] [2022-07-12 01:33:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:29,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 63 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:29,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645138] [2022-07-12 01:33:29,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645138] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:29,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445929295] [2022-07-12 01:33:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:29,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:33:29,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:33:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:29,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 01:33:29,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:33:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 32 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:30,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:33:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:30,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445929295] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:30,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 01:33:30,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2022-07-12 01:33:30,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853916163] [2022-07-12 01:33:30,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:30,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 01:33:30,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:30,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 01:33:30,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-12 01:33:30,914 INFO L87 Difference]: Start difference. First operand 11633 states and 13132 transitions. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:34,261 INFO L93 Difference]: Finished difference Result 41198 states and 46954 transitions. [2022-07-12 01:33:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 01:33:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 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 323 [2022-07-12 01:33:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:34,313 INFO L225 Difference]: With dead ends: 41198 [2022-07-12 01:33:34,314 INFO L226 Difference]: Without dead ends: 28282 [2022-07-12 01:33:34,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 639 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-12 01:33:34,328 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1719 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 1112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1112 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:34,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 229 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1112 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 01:33:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28282 states. [2022-07-12 01:33:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28282 to 28275. [2022-07-12 01:33:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28275 states, 28274 states have (on average 1.1234703260946453) internal successors, (31765), 28274 states have internal predecessors, (31765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28275 states to 28275 states and 31765 transitions. [2022-07-12 01:33:34,621 INFO L78 Accepts]: Start accepts. Automaton has 28275 states and 31765 transitions. Word has length 323 [2022-07-12 01:33:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:34,622 INFO L495 AbstractCegarLoop]: Abstraction has 28275 states and 31765 transitions. [2022-07-12 01:33:34,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 28275 states and 31765 transitions. [2022-07-12 01:33:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-07-12 01:33:34,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:34,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:34,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 01:33:34,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:34,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1497127306, now seen corresponding path program 1 times [2022-07-12 01:33:34,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:34,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456790761] [2022-07-12 01:33:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:34,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:33:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:35,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456790761] [2022-07-12 01:33:35,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456790761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:35,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:35,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:35,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822022904] [2022-07-12 01:33:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:35,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:35,028 INFO L87 Difference]: Start difference. First operand 28275 states and 31765 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:36,672 INFO L93 Difference]: Finished difference Result 61228 states and 68964 transitions. [2022-07-12 01:33:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 377 [2022-07-12 01:33:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:36,715 INFO L225 Difference]: With dead ends: 61228 [2022-07-12 01:33:36,716 INFO L226 Difference]: Without dead ends: 32955 [2022-07-12 01:33:36,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:36,739 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 407 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:36,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 862 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32955 states. [2022-07-12 01:33:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32955 to 32529. [2022-07-12 01:33:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32529 states, 32528 states have (on average 1.1155004918839153) internal successors, (36285), 32528 states have internal predecessors, (36285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32529 states to 32529 states and 36285 transitions. [2022-07-12 01:33:37,092 INFO L78 Accepts]: Start accepts. Automaton has 32529 states and 36285 transitions. Word has length 377 [2022-07-12 01:33:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:37,093 INFO L495 AbstractCegarLoop]: Abstraction has 32529 states and 36285 transitions. [2022-07-12 01:33:37,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 32529 states and 36285 transitions. [2022-07-12 01:33:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-07-12 01:33:37,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:37,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:37,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:33:37,105 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1669752095, now seen corresponding path program 1 times [2022-07-12 01:33:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:37,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740809153] [2022-07-12 01:33:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 332 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:37,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740809153] [2022-07-12 01:33:37,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740809153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502329748] [2022-07-12 01:33:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:37,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:37,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:37,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:33:37,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:33:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:37,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 01:33:37,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:33:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 01:33:37,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:33:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 01:33:38,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502329748] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 01:33:38,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 01:33:38,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-07-12 01:33:38,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448261072] [2022-07-12 01:33:38,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 01:33:38,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 01:33:38,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 01:33:38,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 01:33:38,474 INFO L87 Difference]: Start difference. First operand 32529 states and 36285 transitions. Second operand has 9 states, 9 states have (on average 121.66666666666667) internal successors, (1095), 9 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:49,496 INFO L93 Difference]: Finished difference Result 141380 states and 157615 transitions. [2022-07-12 01:33:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 01:33:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 121.66666666666667) internal successors, (1095), 9 states have internal predecessors, (1095), 0 states have call successors, (0), 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 469 [2022-07-12 01:33:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:49,620 INFO L225 Difference]: With dead ends: 141380 [2022-07-12 01:33:49,620 INFO L226 Difference]: Without dead ends: 107578 [2022-07-12 01:33:49,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 961 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-07-12 01:33:49,652 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 7554 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 11652 mSolverCounterSat, 2369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7554 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 14021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2369 IncrementalHoareTripleChecker+Valid, 11652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:49,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7554 Valid, 502 Invalid, 14021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2369 Valid, 11652 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-07-12 01:33:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107578 states. [2022-07-12 01:33:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107578 to 93947. [2022-07-12 01:33:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93947 states, 93946 states have (on average 1.0956081153002788) internal successors, (102928), 93946 states have internal predecessors, (102928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93947 states to 93947 states and 102928 transitions. [2022-07-12 01:33:50,912 INFO L78 Accepts]: Start accepts. Automaton has 93947 states and 102928 transitions. Word has length 469 [2022-07-12 01:33:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:50,912 INFO L495 AbstractCegarLoop]: Abstraction has 93947 states and 102928 transitions. [2022-07-12 01:33:50,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.66666666666667) internal successors, (1095), 9 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 93947 states and 102928 transitions. [2022-07-12 01:33:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-07-12 01:33:50,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:50,926 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:50,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:33:51,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 01:33:51,144 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:51,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash -519380325, now seen corresponding path program 1 times [2022-07-12 01:33:51,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:51,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067661260] [2022-07-12 01:33:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:51,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:33:51,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:51,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067661260] [2022-07-12 01:33:51,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067661260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:51,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:51,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:33:51,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319802552] [2022-07-12 01:33:51,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:51,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:33:51,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:33:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:51,541 INFO L87 Difference]: Start difference. First operand 93947 states and 102928 transitions. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:54,837 INFO L93 Difference]: Finished difference Result 218996 states and 240667 transitions. [2022-07-12 01:33:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:33:54,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 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 512 [2022-07-12 01:33:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:54,979 INFO L225 Difference]: With dead ends: 218996 [2022-07-12 01:33:54,979 INFO L226 Difference]: Without dead ends: 113542 [2022-07-12 01:33:55,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:55,027 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 706 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:55,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 789 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:33:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113542 states. [2022-07-12 01:33:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113542 to 111786. [2022-07-12 01:33:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111786 states, 111785 states have (on average 1.0962740975980678) internal successors, (122547), 111785 states have internal predecessors, (122547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111786 states to 111786 states and 122547 transitions. [2022-07-12 01:33:56,615 INFO L78 Accepts]: Start accepts. Automaton has 111786 states and 122547 transitions. Word has length 512 [2022-07-12 01:33:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:56,616 INFO L495 AbstractCegarLoop]: Abstraction has 111786 states and 122547 transitions. [2022-07-12 01:33:56,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 111786 states and 122547 transitions. [2022-07-12 01:33:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-07-12 01:33:56,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:56,662 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 01:33:56,662 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1312684189, now seen corresponding path program 1 times [2022-07-12 01:33:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:56,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88118721] [2022-07-12 01:33:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 01:33:57,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:57,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88118721] [2022-07-12 01:33:57,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88118721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:57,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:57,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:57,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655289259] [2022-07-12 01:33:57,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:57,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:57,057 INFO L87 Difference]: Start difference. First operand 111786 states and 122547 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:58,780 INFO L93 Difference]: Finished difference Result 223143 states and 244663 transitions. [2022-07-12 01:33:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:58,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 601 [2022-07-12 01:33:58,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:58,933 INFO L225 Difference]: With dead ends: 223143 [2022-07-12 01:33:58,933 INFO L226 Difference]: Without dead ends: 111784 [2022-07-12 01:33:58,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:58,993 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 593 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:58,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 567 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 01:33:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111784 states. [2022-07-12 01:34:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111784 to 111784. [2022-07-12 01:34:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111784 states, 111783 states have (on average 1.0961237397457575) internal successors, (122528), 111783 states have internal predecessors, (122528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111784 states to 111784 states and 122528 transitions. [2022-07-12 01:34:00,427 INFO L78 Accepts]: Start accepts. Automaton has 111784 states and 122528 transitions. Word has length 601 [2022-07-12 01:34:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:00,428 INFO L495 AbstractCegarLoop]: Abstraction has 111784 states and 122528 transitions. [2022-07-12 01:34:00,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 111784 states and 122528 transitions. [2022-07-12 01:34:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2022-07-12 01:34:00,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:00,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:00,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:34:00,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:00,446 INFO L85 PathProgramCache]: Analyzing trace with hash 577864845, now seen corresponding path program 1 times [2022-07-12 01:34:00,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:00,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412139055] [2022-07-12 01:34:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:00,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 01:34:00,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:00,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412139055] [2022-07-12 01:34:00,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412139055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:00,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:00,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:00,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877842989] [2022-07-12 01:34:00,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:00,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:00,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:00,877 INFO L87 Difference]: Start difference. First operand 111784 states and 122528 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:02,879 INFO L93 Difference]: Finished difference Result 232928 states and 255065 transitions. [2022-07-12 01:34:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 603 [2022-07-12 01:34:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:03,020 INFO L225 Difference]: With dead ends: 232928 [2022-07-12 01:34:03,020 INFO L226 Difference]: Without dead ends: 121571 [2022-07-12 01:34:03,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:03,078 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 229 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:03,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 331 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121571 states. [2022-07-12 01:34:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121571 to 117734. [2022-07-12 01:34:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117734 states, 117733 states have (on average 1.092871157619359) internal successors, (128667), 117733 states have internal predecessors, (128667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117734 states to 117734 states and 128667 transitions. [2022-07-12 01:34:04,656 INFO L78 Accepts]: Start accepts. Automaton has 117734 states and 128667 transitions. Word has length 603 [2022-07-12 01:34:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:04,658 INFO L495 AbstractCegarLoop]: Abstraction has 117734 states and 128667 transitions. [2022-07-12 01:34:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 117734 states and 128667 transitions. [2022-07-12 01:34:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-07-12 01:34:04,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:04,682 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:34:04,682 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1407368231, now seen corresponding path program 1 times [2022-07-12 01:34:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:04,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703234828] [2022-07-12 01:34:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:04,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2022-07-12 01:34:05,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:05,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703234828] [2022-07-12 01:34:05,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703234828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:05,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:05,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:05,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164460880] [2022-07-12 01:34:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:05,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:05,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:05,108 INFO L87 Difference]: Start difference. First operand 117734 states and 128667 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:07,098 INFO L93 Difference]: Finished difference Result 231626 states and 253016 transitions. [2022-07-12 01:34:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:07,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 611 [2022-07-12 01:34:07,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:07,228 INFO L225 Difference]: With dead ends: 231626 [2022-07-12 01:34:07,229 INFO L226 Difference]: Without dead ends: 113889 [2022-07-12 01:34:07,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:07,259 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 459 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:07,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 727 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113889 states. [2022-07-12 01:34:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113889 to 108354. [2022-07-12 01:34:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108354 states, 108353 states have (on average 1.084898433822783) internal successors, (117552), 108353 states have internal predecessors, (117552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108354 states to 108354 states and 117552 transitions. [2022-07-12 01:34:08,577 INFO L78 Accepts]: Start accepts. Automaton has 108354 states and 117552 transitions. Word has length 611 [2022-07-12 01:34:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:08,578 INFO L495 AbstractCegarLoop]: Abstraction has 108354 states and 117552 transitions. [2022-07-12 01:34:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 108354 states and 117552 transitions. [2022-07-12 01:34:08,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-07-12 01:34:08,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:08,595 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:08,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 01:34:08,596 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 875478820, now seen corresponding path program 1 times [2022-07-12 01:34:08,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:08,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257370249] [2022-07-12 01:34:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:08,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2022-07-12 01:34:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257370249] [2022-07-12 01:34:08,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257370249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:08,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:08,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502632686] [2022-07-12 01:34:08,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:08,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:08,773 INFO L87 Difference]: Start difference. First operand 108354 states and 117552 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 2 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:09,996 INFO L93 Difference]: Finished difference Result 192786 states and 208857 transitions. [2022-07-12 01:34:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 2 states have internal predecessors, (341), 0 states have call successors, (0), 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 631 [2022-07-12 01:34:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:10,090 INFO L225 Difference]: With dead ends: 192786 [2022-07-12 01:34:10,090 INFO L226 Difference]: Without dead ends: 84858 [2022-07-12 01:34:10,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:10,141 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:10,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 76 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 01:34:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84858 states. [2022-07-12 01:34:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84858 to 80180. [2022-07-12 01:34:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80180 states, 80179 states have (on average 1.0820164881078587) internal successors, (86755), 80179 states have internal predecessors, (86755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80180 states to 80180 states and 86755 transitions. [2022-07-12 01:34:11,075 INFO L78 Accepts]: Start accepts. Automaton has 80180 states and 86755 transitions. Word has length 631 [2022-07-12 01:34:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:11,076 INFO L495 AbstractCegarLoop]: Abstraction has 80180 states and 86755 transitions. [2022-07-12 01:34:11,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 2 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 80180 states and 86755 transitions. [2022-07-12 01:34:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2022-07-12 01:34:11,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:11,095 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:11,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:34:11,095 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:11,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:11,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1929668838, now seen corresponding path program 1 times [2022-07-12 01:34:11,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:11,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531408289] [2022-07-12 01:34:11,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:11,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 598 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-07-12 01:34:11,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:11,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531408289] [2022-07-12 01:34:11,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531408289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:11,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:11,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:11,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415535071] [2022-07-12 01:34:11,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:11,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:11,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:11,531 INFO L87 Difference]: Start difference. First operand 80180 states and 86755 transitions. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:13,248 INFO L93 Difference]: Finished difference Result 170985 states and 184697 transitions. [2022-07-12 01:34:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:13,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 682 [2022-07-12 01:34:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:13,340 INFO L225 Difference]: With dead ends: 170985 [2022-07-12 01:34:13,340 INFO L226 Difference]: Without dead ends: 91232 [2022-07-12 01:34:13,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:13,359 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 266 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:13,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 238 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 01:34:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91232 states. [2022-07-12 01:34:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91232 to 82303. [2022-07-12 01:34:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82303 states, 82302 states have (on average 1.07495565113849) internal successors, (88471), 82302 states have internal predecessors, (88471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82303 states to 82303 states and 88471 transitions. [2022-07-12 01:34:14,349 INFO L78 Accepts]: Start accepts. Automaton has 82303 states and 88471 transitions. Word has length 682 [2022-07-12 01:34:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:14,349 INFO L495 AbstractCegarLoop]: Abstraction has 82303 states and 88471 transitions. [2022-07-12 01:34:14,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 82303 states and 88471 transitions. [2022-07-12 01:34:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2022-07-12 01:34:14,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:14,369 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:14,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 01:34:14,369 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1696032077, now seen corresponding path program 1 times [2022-07-12 01:34:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:14,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039332822] [2022-07-12 01:34:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-07-12 01:34:14,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:14,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039332822] [2022-07-12 01:34:14,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039332822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:14,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:14,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221522018] [2022-07-12 01:34:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:14,548 INFO L87 Difference]: Start difference. First operand 82303 states and 88471 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:16,464 INFO L93 Difference]: Finished difference Result 171411 states and 184428 transitions. [2022-07-12 01:34:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:16,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 719 [2022-07-12 01:34:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:16,551 INFO L225 Difference]: With dead ends: 171411 [2022-07-12 01:34:16,552 INFO L226 Difference]: Without dead ends: 89535 [2022-07-12 01:34:16,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:16,592 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 461 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:16,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 198 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89535 states. [2022-07-12 01:34:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89535 to 78849. [2022-07-12 01:34:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78849 states, 78848 states have (on average 1.0746880073051948) internal successors, (84737), 78848 states have internal predecessors, (84737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78849 states to 78849 states and 84737 transitions. [2022-07-12 01:34:17,487 INFO L78 Accepts]: Start accepts. Automaton has 78849 states and 84737 transitions. Word has length 719 [2022-07-12 01:34:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:17,488 INFO L495 AbstractCegarLoop]: Abstraction has 78849 states and 84737 transitions. [2022-07-12 01:34:17,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 78849 states and 84737 transitions. [2022-07-12 01:34:17,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2022-07-12 01:34:17,507 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:17,507 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:17,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 01:34:17,508 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:17,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1939335381, now seen corresponding path program 1 times [2022-07-12 01:34:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:17,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930907314] [2022-07-12 01:34:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:17,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-07-12 01:34:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:17,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930907314] [2022-07-12 01:34:17,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930907314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:17,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:17,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126659594] [2022-07-12 01:34:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:17,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:17,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:17,964 INFO L87 Difference]: Start difference. First operand 78849 states and 84737 transitions. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:20,114 INFO L93 Difference]: Finished difference Result 158971 states and 170847 transitions. [2022-07-12 01:34:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:20,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 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 749 [2022-07-12 01:34:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:20,192 INFO L225 Difference]: With dead ends: 158971 [2022-07-12 01:34:20,192 INFO L226 Difference]: Without dead ends: 80549 [2022-07-12 01:34:20,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:20,242 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 668 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:20,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 719 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:34:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80549 states. [2022-07-12 01:34:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80549 to 80542. [2022-07-12 01:34:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80542 states, 80541 states have (on average 1.073416024136775) internal successors, (86454), 80541 states have internal predecessors, (86454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80542 states to 80542 states and 86454 transitions. [2022-07-12 01:34:21,186 INFO L78 Accepts]: Start accepts. Automaton has 80542 states and 86454 transitions. Word has length 749 [2022-07-12 01:34:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:21,187 INFO L495 AbstractCegarLoop]: Abstraction has 80542 states and 86454 transitions. [2022-07-12 01:34:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 80542 states and 86454 transitions. [2022-07-12 01:34:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2022-07-12 01:34:21,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:21,217 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 01:34:21,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash 598582142, now seen corresponding path program 1 times [2022-07-12 01:34:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:21,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291325308] [2022-07-12 01:34:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:21,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1756 backedges. 1197 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-12 01:34:21,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:21,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291325308] [2022-07-12 01:34:21,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291325308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:21,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:21,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641651827] [2022-07-12 01:34:21,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:21,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:21,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:21,756 INFO L87 Difference]: Start difference. First operand 80542 states and 86454 transitions. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:24,712 INFO L93 Difference]: Finished difference Result 168746 states and 181041 transitions. [2022-07-12 01:34:24,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:24,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 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 844 [2022-07-12 01:34:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:24,795 INFO L225 Difference]: With dead ends: 168746 [2022-07-12 01:34:24,795 INFO L226 Difference]: Without dead ends: 89056 [2022-07-12 01:34:24,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:24,814 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 755 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:24,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 298 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:34:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89056 states. [2022-07-12 01:34:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89056 to 81400. [2022-07-12 01:34:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81400 states, 81399 states have (on average 1.0705659774690106) internal successors, (87143), 81399 states have internal predecessors, (87143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81400 states to 81400 states and 87143 transitions. [2022-07-12 01:34:25,743 INFO L78 Accepts]: Start accepts. Automaton has 81400 states and 87143 transitions. Word has length 844 [2022-07-12 01:34:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:25,744 INFO L495 AbstractCegarLoop]: Abstraction has 81400 states and 87143 transitions. [2022-07-12 01:34:25,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 81400 states and 87143 transitions. [2022-07-12 01:34:25,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2022-07-12 01:34:25,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:25,777 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:25,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 01:34:25,777 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:25,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:25,778 INFO L85 PathProgramCache]: Analyzing trace with hash -964895329, now seen corresponding path program 1 times [2022-07-12 01:34:25,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:25,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025899871] [2022-07-12 01:34:25,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:25,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2022-07-12 01:34:26,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:26,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025899871] [2022-07-12 01:34:26,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025899871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:26,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:26,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710974082] [2022-07-12 01:34:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:26,067 INFO L87 Difference]: Start difference. First operand 81400 states and 87143 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:27,734 INFO L93 Difference]: Finished difference Result 167474 states and 179082 transitions. [2022-07-12 01:34:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:27,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 862 [2022-07-12 01:34:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:27,818 INFO L225 Difference]: With dead ends: 167474 [2022-07-12 01:34:27,819 INFO L226 Difference]: Without dead ends: 84801 [2022-07-12 01:34:27,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:27,857 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 450 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:27,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 696 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84801 states. [2022-07-12 01:34:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84801 to 82675. [2022-07-12 01:34:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82675 states, 82674 states have (on average 1.064796671263033) internal successors, (88031), 82674 states have internal predecessors, (88031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82675 states to 82675 states and 88031 transitions. [2022-07-12 01:34:28,801 INFO L78 Accepts]: Start accepts. Automaton has 82675 states and 88031 transitions. Word has length 862 [2022-07-12 01:34:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:28,802 INFO L495 AbstractCegarLoop]: Abstraction has 82675 states and 88031 transitions. [2022-07-12 01:34:28,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 82675 states and 88031 transitions. [2022-07-12 01:34:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2022-07-12 01:34:28,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:28,836 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:28,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 01:34:28,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:28,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:28,836 INFO L85 PathProgramCache]: Analyzing trace with hash 632932576, now seen corresponding path program 1 times [2022-07-12 01:34:28,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:28,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485805007] [2022-07-12 01:34:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:28,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 980 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-12 01:34:29,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:29,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485805007] [2022-07-12 01:34:29,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485805007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:29,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:29,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055361689] [2022-07-12 01:34:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:29,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:29,099 INFO L87 Difference]: Start difference. First operand 82675 states and 88031 transitions. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:30,993 INFO L93 Difference]: Finished difference Result 172169 states and 183411 transitions. [2022-07-12 01:34:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 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 985 [2022-07-12 01:34:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:31,081 INFO L225 Difference]: With dead ends: 172169 [2022-07-12 01:34:31,081 INFO L226 Difference]: Without dead ends: 90346 [2022-07-12 01:34:31,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:31,128 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 335 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:31,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 228 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90346 states. [2022-07-12 01:34:32,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90346 to 86506. [2022-07-12 01:34:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86506 states, 86505 states have (on average 1.0647014623432172) internal successors, (92102), 86505 states have internal predecessors, (92102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86506 states to 86506 states and 92102 transitions. [2022-07-12 01:34:32,247 INFO L78 Accepts]: Start accepts. Automaton has 86506 states and 92102 transitions. Word has length 985 [2022-07-12 01:34:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:32,247 INFO L495 AbstractCegarLoop]: Abstraction has 86506 states and 92102 transitions. [2022-07-12 01:34:32,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 86506 states and 92102 transitions. [2022-07-12 01:34:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2022-07-12 01:34:32,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:32,285 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:32,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 01:34:32,285 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:32,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1675131250, now seen corresponding path program 1 times [2022-07-12 01:34:32,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:32,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155715461] [2022-07-12 01:34:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:32,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 1485 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-12 01:34:32,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155715461] [2022-07-12 01:34:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155715461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:32,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:32,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 01:34:32,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021581291] [2022-07-12 01:34:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:32,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 01:34:32,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 01:34:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:34:32,805 INFO L87 Difference]: Start difference. First operand 86506 states and 92102 transitions. Second operand has 5 states, 5 states have (on average 161.8) internal successors, (809), 5 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:37,440 INFO L93 Difference]: Finished difference Result 207081 states and 220798 transitions. [2022-07-12 01:34:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 01:34:37,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 161.8) internal successors, (809), 5 states have internal predecessors, (809), 0 states have call successors, (0), 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 1002 [2022-07-12 01:34:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:37,562 INFO L225 Difference]: With dead ends: 207081 [2022-07-12 01:34:37,562 INFO L226 Difference]: Without dead ends: 121002 [2022-07-12 01:34:37,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 01:34:37,596 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1480 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4476 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 4899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 4476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:37,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 275 Invalid, 4899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 4476 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-12 01:34:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121002 states. [2022-07-12 01:34:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121002 to 102695. [2022-07-12 01:34:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102695 states, 102694 states have (on average 1.0635090657682045) internal successors, (109216), 102694 states have internal predecessors, (109216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102695 states to 102695 states and 109216 transitions. [2022-07-12 01:34:38,774 INFO L78 Accepts]: Start accepts. Automaton has 102695 states and 109216 transitions. Word has length 1002 [2022-07-12 01:34:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:38,775 INFO L495 AbstractCegarLoop]: Abstraction has 102695 states and 109216 transitions. [2022-07-12 01:34:38,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.8) internal successors, (809), 5 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 102695 states and 109216 transitions. [2022-07-12 01:34:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2022-07-12 01:34:38,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:38,812 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:38,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 01:34:38,812 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:38,813 INFO L85 PathProgramCache]: Analyzing trace with hash 834271332, now seen corresponding path program 1 times [2022-07-12 01:34:38,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:38,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817876039] [2022-07-12 01:34:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:38,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 1527 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-12 01:34:39,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:39,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817876039] [2022-07-12 01:34:39,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817876039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:39,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:39,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 01:34:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428773674] [2022-07-12 01:34:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:39,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 01:34:39,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 01:34:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:34:39,393 INFO L87 Difference]: Start difference. First operand 102695 states and 109216 transitions. Second operand has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)