./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.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/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.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 59cbe596d3f7428acf9801a184524121cc4bc5ab736968007287d7c74d81797e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:38:00,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:38:00,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:38:00,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:38:00,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:38:00,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:38:00,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:38:00,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:38:00,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:38:00,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:38:00,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:38:00,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:38:00,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:38:00,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:38:00,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:38:00,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:38:00,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:38:00,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:38:00,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:38:00,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:38:00,284 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:38:00,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:38:00,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:38:00,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:38:00,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:38:00,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:38:00,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:38:00,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:38:00,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:38:00,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:38:00,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:38:00,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:38:00,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:38:00,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:38:00,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:38:00,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:38:00,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:38:00,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:38:00,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:38:00,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:38:00,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:38:00,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:38:00,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:38:00,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:38:00,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:38:00,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:38:00,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:38:00,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:38:00,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:38:00,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:38:00,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:38:00,319 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:38:00,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:38:00,320 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:38:00,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:38:00,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:38:00,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:38:00,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:38:00,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:38:00,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:38:00,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:38:00,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:38:00,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:38:00,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:38:00,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:38:00,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:38:00,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:38:00,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:38:00,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:38:00,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:38:00,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:38:00,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:38:00,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:38:00,324 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:38:00,324 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:38:00,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:38:00,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59cbe596d3f7428acf9801a184524121cc4bc5ab736968007287d7c74d81797e [2022-07-12 07:38:00,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:38:00,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:38:00,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:38:00,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:38:00,574 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:38:00,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-12 07:38:00,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c2eeb9f/1becbdc23eea4a18a5019677a4d90d6e/FLAG43c223f88 [2022-07-12 07:38:01,045 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:38:01,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-12 07:38:01,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c2eeb9f/1becbdc23eea4a18a5019677a4d90d6e/FLAG43c223f88 [2022-07-12 07:38:01,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c2eeb9f/1becbdc23eea4a18a5019677a4d90d6e [2022-07-12 07:38:01,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:38:01,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:38:01,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:38:01,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:38:01,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:38:01,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743ce06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01, skipping insertion in model container [2022-07-12 07:38:01,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:38:01,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:38:01,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13674,13687] [2022-07-12 07:38:01,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:38:01,481 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:38:01,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13674,13687] [2022-07-12 07:38:01,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:38:01,580 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:38:01,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01 WrapperNode [2022-07-12 07:38:01,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:38:01,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:38:01,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:38:01,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:38:01,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,656 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1364 [2022-07-12 07:38:01,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:38:01,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:38:01,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:38:01,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:38:01,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:38:01,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:38:01,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:38:01,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:38:01,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (1/1) ... [2022-07-12 07:38:01,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:38:01,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:38:01,759 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 07:38:01,777 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 07:38:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:38:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:38:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:38:01,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:38:01,939 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:38:01,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:38:02,595 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:38:02,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:38:02,602 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:38:02,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:38:02 BoogieIcfgContainer [2022-07-12 07:38:02,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:38:02,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:38:02,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:38:02,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:38:02,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:38:01" (1/3) ... [2022-07-12 07:38:02,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18db8fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:38:02, skipping insertion in model container [2022-07-12 07:38:02,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:38:01" (2/3) ... [2022-07-12 07:38:02,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18db8fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:38:02, skipping insertion in model container [2022-07-12 07:38:02,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:38:02" (3/3) ... [2022-07-12 07:38:02,611 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-12 07:38:02,621 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:38:02,621 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:38:02,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:38:02,702 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@630c56ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@50d5f3f [2022-07-12 07:38:02,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:38:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 340 states have (on average 1.7970588235294118) internal successors, (611), 341 states have internal predecessors, (611), 0 states have call successors, (0), 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 07:38:02,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 07:38:02,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:02,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:02,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:02,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1594884720, now seen corresponding path program 1 times [2022-07-12 07:38:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:02,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082788905] [2022-07-12 07:38:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:03,041 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 07:38:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:03,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082788905] [2022-07-12 07:38:03,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082788905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:03,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:03,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:03,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321996238] [2022-07-12 07:38:03,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:03,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:03,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:03,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:03,069 INFO L87 Difference]: Start difference. First operand has 342 states, 340 states have (on average 1.7970588235294118) internal successors, (611), 341 states have internal predecessors, (611), 0 states have call successors, (0), 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 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 07:38:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:03,170 INFO L93 Difference]: Finished difference Result 628 states and 1091 transitions. [2022-07-12 07:38:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:03,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-07-12 07:38:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:03,184 INFO L225 Difference]: With dead ends: 628 [2022-07-12 07:38:03,184 INFO L226 Difference]: Without dead ends: 473 [2022-07-12 07:38:03,187 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 07:38:03,189 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 256 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:03,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1132 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-07-12 07:38:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2022-07-12 07:38:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.6574468085106382) internal successors, (779), 470 states have internal predecessors, (779), 0 states have call successors, (0), 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 07:38:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 779 transitions. [2022-07-12 07:38:03,269 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 779 transitions. Word has length 118 [2022-07-12 07:38:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:03,270 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 779 transitions. [2022-07-12 07:38:03,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 07:38:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 779 transitions. [2022-07-12 07:38:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 07:38:03,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:03,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:03,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:38:03,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash -910979864, now seen corresponding path program 1 times [2022-07-12 07:38:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:03,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416564189] [2022-07-12 07:38:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:03,397 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 07:38:03,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:03,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416564189] [2022-07-12 07:38:03,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416564189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:03,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:03,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:03,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313273450] [2022-07-12 07:38:03,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:03,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:03,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:03,401 INFO L87 Difference]: Start difference. First operand 471 states and 779 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 07:38:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:03,438 INFO L93 Difference]: Finished difference Result 1007 states and 1675 transitions. [2022-07-12 07:38:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:03,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-07-12 07:38:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:03,442 INFO L225 Difference]: With dead ends: 1007 [2022-07-12 07:38:03,442 INFO L226 Difference]: Without dead ends: 729 [2022-07-12 07:38:03,443 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 07:38:03,444 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 218 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:03,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1075 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-07-12 07:38:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 727. [2022-07-12 07:38:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 1.6611570247933884) internal successors, (1206), 726 states have internal predecessors, (1206), 0 states have call successors, (0), 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 07:38:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1206 transitions. [2022-07-12 07:38:03,466 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1206 transitions. Word has length 121 [2022-07-12 07:38:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:03,467 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1206 transitions. [2022-07-12 07:38:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 07:38:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1206 transitions. [2022-07-12 07:38:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:38:03,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:03,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:38:03,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash -195863697, now seen corresponding path program 1 times [2022-07-12 07:38:03,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:03,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130989530] [2022-07-12 07:38:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:03,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:03,551 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 07:38:03,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:03,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130989530] [2022-07-12 07:38:03,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130989530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:03,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:03,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:03,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203574080] [2022-07-12 07:38:03,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:03,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:03,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:03,555 INFO L87 Difference]: Start difference. First operand 727 states and 1206 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:38:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:03,594 INFO L93 Difference]: Finished difference Result 1755 states and 2920 transitions. [2022-07-12 07:38:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:03,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:38:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:03,602 INFO L225 Difference]: With dead ends: 1755 [2022-07-12 07:38:03,602 INFO L226 Difference]: Without dead ends: 1221 [2022-07-12 07:38:03,606 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 07:38:03,610 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 211 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:03,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1076 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-07-12 07:38:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1219. [2022-07-12 07:38:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 1.6600985221674878) internal successors, (2022), 1218 states have internal predecessors, (2022), 0 states have call successors, (0), 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 07:38:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2022 transitions. [2022-07-12 07:38:03,660 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2022 transitions. Word has length 124 [2022-07-12 07:38:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:03,662 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 2022 transitions. [2022-07-12 07:38:03,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:38:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2022 transitions. [2022-07-12 07:38:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-12 07:38:03,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:03,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:03,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:38:03,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1851247163, now seen corresponding path program 1 times [2022-07-12 07:38:03,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:03,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304745201] [2022-07-12 07:38:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:03,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:03,782 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 07:38:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:03,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304745201] [2022-07-12 07:38:03,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304745201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:03,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:03,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:03,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716148887] [2022-07-12 07:38:03,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:03,785 INFO L87 Difference]: Start difference. First operand 1219 states and 2022 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 07:38:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:03,839 INFO L93 Difference]: Finished difference Result 3191 states and 5296 transitions. [2022-07-12 07:38:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:03,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-07-12 07:38:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:03,846 INFO L225 Difference]: With dead ends: 3191 [2022-07-12 07:38:03,846 INFO L226 Difference]: Without dead ends: 2165 [2022-07-12 07:38:03,848 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 07:38:03,856 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 204 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:03,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1077 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2022-07-12 07:38:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2163. [2022-07-12 07:38:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.6549491211840888) internal successors, (3578), 2162 states have internal predecessors, (3578), 0 states have call successors, (0), 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 07:38:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3578 transitions. [2022-07-12 07:38:03,922 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3578 transitions. Word has length 127 [2022-07-12 07:38:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:03,923 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 3578 transitions. [2022-07-12 07:38:03,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 07:38:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3578 transitions. [2022-07-12 07:38:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 07:38:03,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:03,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:38:03,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -559497898, now seen corresponding path program 1 times [2022-07-12 07:38:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:03,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013401685] [2022-07-12 07:38:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:04,018 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 07:38:04,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:04,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013401685] [2022-07-12 07:38:04,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013401685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:04,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:04,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:38:04,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607030879] [2022-07-12 07:38:04,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:04,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:38:04,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:04,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:38:04,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:38:04,021 INFO L87 Difference]: Start difference. First operand 2163 states and 3578 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 07:38:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:04,628 INFO L93 Difference]: Finished difference Result 11283 states and 18810 transitions. [2022-07-12 07:38:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:38:04,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-07-12 07:38:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:04,660 INFO L225 Difference]: With dead ends: 11283 [2022-07-12 07:38:04,660 INFO L226 Difference]: Without dead ends: 9313 [2022-07-12 07:38:04,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:38:04,666 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 2036 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:04,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 5187 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:38:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2022-07-12 07:38:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 4001. [2022-07-12 07:38:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 4000 states have (on average 1.65525) internal successors, (6621), 4000 states have internal predecessors, (6621), 0 states have call successors, (0), 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 07:38:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6621 transitions. [2022-07-12 07:38:04,932 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6621 transitions. Word has length 130 [2022-07-12 07:38:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:04,933 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 6621 transitions. [2022-07-12 07:38:04,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 07:38:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6621 transitions. [2022-07-12 07:38:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 07:38:04,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:04,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:38:04,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:38:04,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:04,939 INFO L85 PathProgramCache]: Analyzing trace with hash -231627666, now seen corresponding path program 1 times [2022-07-12 07:38:04,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:04,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590496246] [2022-07-12 07:38:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:04,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:05,015 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 07:38:05,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:05,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590496246] [2022-07-12 07:38:05,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590496246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:05,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:05,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:38:05,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675906970] [2022-07-12 07:38:05,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:05,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:38:05,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:05,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:38:05,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:38:05,018 INFO L87 Difference]: Start difference. First operand 4001 states and 6621 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 07:38:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:05,453 INFO L93 Difference]: Finished difference Result 11713 states and 19481 transitions. [2022-07-12 07:38:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:38:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-07-12 07:38:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:05,477 INFO L225 Difference]: With dead ends: 11713 [2022-07-12 07:38:05,477 INFO L226 Difference]: Without dead ends: 7905 [2022-07-12 07:38:05,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:38:05,484 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 718 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:05,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1675 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2022-07-12 07:38:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 5936. [2022-07-12 07:38:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 1.6572872788542545) internal successors, (9836), 5935 states have internal predecessors, (9836), 0 states have call successors, (0), 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 07:38:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 9836 transitions. [2022-07-12 07:38:05,799 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 9836 transitions. Word has length 131 [2022-07-12 07:38:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:05,799 INFO L495 AbstractCegarLoop]: Abstraction has 5936 states and 9836 transitions. [2022-07-12 07:38:05,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 07:38:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 9836 transitions. [2022-07-12 07:38:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 07:38:05,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:05,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:38:05,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1747933454, now seen corresponding path program 1 times [2022-07-12 07:38:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184071841] [2022-07-12 07:38:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:05,849 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 07:38:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:05,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184071841] [2022-07-12 07:38:05,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184071841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:05,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:05,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034306091] [2022-07-12 07:38:05,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:05,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:05,852 INFO L87 Difference]: Start difference. First operand 5936 states and 9836 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:06,331 INFO L93 Difference]: Finished difference Result 13025 states and 21678 transitions. [2022-07-12 07:38:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:06,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-07-12 07:38:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:06,364 INFO L225 Difference]: With dead ends: 13025 [2022-07-12 07:38:06,365 INFO L226 Difference]: Without dead ends: 9024 [2022-07-12 07:38:06,373 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 07:38:06,375 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 226 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:06,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1256 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2022-07-12 07:38:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 9022. [2022-07-12 07:38:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9022 states, 9021 states have (on average 1.6572442079592062) internal successors, (14950), 9021 states have internal predecessors, (14950), 0 states have call successors, (0), 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 07:38:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9022 states to 9022 states and 14950 transitions. [2022-07-12 07:38:06,868 INFO L78 Accepts]: Start accepts. Automaton has 9022 states and 14950 transitions. Word has length 132 [2022-07-12 07:38:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:06,868 INFO L495 AbstractCegarLoop]: Abstraction has 9022 states and 14950 transitions. [2022-07-12 07:38:06,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9022 states and 14950 transitions. [2022-07-12 07:38:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 07:38:06,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:06,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:06,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:38:06,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 579129211, now seen corresponding path program 1 times [2022-07-12 07:38:06,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:06,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383707396] [2022-07-12 07:38:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:06,918 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 07:38:06,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:06,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383707396] [2022-07-12 07:38:06,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383707396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:06,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:06,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859137885] [2022-07-12 07:38:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:06,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:06,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:06,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:06,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:06,920 INFO L87 Difference]: Start difference. First operand 9022 states and 14950 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:07,412 INFO L93 Difference]: Finished difference Result 17368 states and 28819 transitions. [2022-07-12 07:38:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:07,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-07-12 07:38:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:07,437 INFO L225 Difference]: With dead ends: 17368 [2022-07-12 07:38:07,438 INFO L226 Difference]: Without dead ends: 12606 [2022-07-12 07:38:07,446 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 07:38:07,447 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 219 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:07,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1232 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12606 states. [2022-07-12 07:38:08,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12606 to 12604. [2022-07-12 07:38:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12604 states, 12603 states have (on average 1.653574545743077) internal successors, (20840), 12603 states have internal predecessors, (20840), 0 states have call successors, (0), 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 07:38:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12604 states to 12604 states and 20840 transitions. [2022-07-12 07:38:08,269 INFO L78 Accepts]: Start accepts. Automaton has 12604 states and 20840 transitions. Word has length 132 [2022-07-12 07:38:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:08,269 INFO L495 AbstractCegarLoop]: Abstraction has 12604 states and 20840 transitions. [2022-07-12 07:38:08,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:08,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12604 states and 20840 transitions. [2022-07-12 07:38:08,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 07:38:08,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:08,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:08,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:38:08,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1676490411, now seen corresponding path program 1 times [2022-07-12 07:38:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:08,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198266801] [2022-07-12 07:38:08,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:08,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:08,324 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 07:38:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:08,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198266801] [2022-07-12 07:38:08,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198266801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:08,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:08,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763391822] [2022-07-12 07:38:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:08,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:08,327 INFO L87 Difference]: Start difference. First operand 12604 states and 20840 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:09,184 INFO L93 Difference]: Finished difference Result 24110 states and 39925 transitions. [2022-07-12 07:38:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:09,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-07-12 07:38:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:09,228 INFO L225 Difference]: With dead ends: 24110 [2022-07-12 07:38:09,228 INFO L226 Difference]: Without dead ends: 17468 [2022-07-12 07:38:09,241 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 07:38:09,243 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 212 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:09,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1199 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17468 states. [2022-07-12 07:38:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17468 to 17466. [2022-07-12 07:38:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17466 states, 17465 states have (on average 1.6494703693100488) internal successors, (28808), 17465 states have internal predecessors, (28808), 0 states have call successors, (0), 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 07:38:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17466 states to 17466 states and 28808 transitions. [2022-07-12 07:38:10,115 INFO L78 Accepts]: Start accepts. Automaton has 17466 states and 28808 transitions. Word has length 132 [2022-07-12 07:38:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:10,116 INFO L495 AbstractCegarLoop]: Abstraction has 17466 states and 28808 transitions. [2022-07-12 07:38:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 17466 states and 28808 transitions. [2022-07-12 07:38:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 07:38:10,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:10,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:10,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:38:10,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:10,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1346972957, now seen corresponding path program 1 times [2022-07-12 07:38:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:10,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913955732] [2022-07-12 07:38:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:10,179 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 07:38:10,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:10,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913955732] [2022-07-12 07:38:10,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913955732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:10,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:10,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:38:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113964734] [2022-07-12 07:38:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:10,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:38:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:38:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:38:10,182 INFO L87 Difference]: Start difference. First operand 17466 states and 28808 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:12,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:12,346 INFO L93 Difference]: Finished difference Result 56537 states and 93383 transitions. [2022-07-12 07:38:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:38:12,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-07-12 07:38:12,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:12,439 INFO L225 Difference]: With dead ends: 56537 [2022-07-12 07:38:12,439 INFO L226 Difference]: Without dead ends: 39310 [2022-07-12 07:38:12,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:38:12,472 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 716 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:12,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1612 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39310 states. [2022-07-12 07:38:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39310 to 28329. [2022-07-12 07:38:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28329 states, 28328 states have (on average 1.644909630048009) internal successors, (46597), 28328 states have internal predecessors, (46597), 0 states have call successors, (0), 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 07:38:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28329 states to 28329 states and 46597 transitions. [2022-07-12 07:38:14,003 INFO L78 Accepts]: Start accepts. Automaton has 28329 states and 46597 transitions. Word has length 132 [2022-07-12 07:38:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:14,003 INFO L495 AbstractCegarLoop]: Abstraction has 28329 states and 46597 transitions. [2022-07-12 07:38:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 28329 states and 46597 transitions. [2022-07-12 07:38:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 07:38:14,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:14,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:14,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:38:14,005 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash -434438713, now seen corresponding path program 1 times [2022-07-12 07:38:14,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:14,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620652477] [2022-07-12 07:38:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:14,052 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 07:38:14,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:14,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620652477] [2022-07-12 07:38:14,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620652477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:14,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:14,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:38:14,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311444962] [2022-07-12 07:38:14,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:14,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:38:14,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:38:14,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:38:14,055 INFO L87 Difference]: Start difference. First operand 28329 states and 46597 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:15,929 INFO L93 Difference]: Finished difference Result 54295 states and 89424 transitions. [2022-07-12 07:38:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:38:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-07-12 07:38:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:15,998 INFO L225 Difference]: With dead ends: 54295 [2022-07-12 07:38:15,999 INFO L226 Difference]: Without dead ends: 39073 [2022-07-12 07:38:16,022 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 07:38:16,023 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 205 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:16,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39073 states. [2022-07-12 07:38:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39073 to 39071. [2022-07-12 07:38:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39071 states, 39070 states have (on average 1.6393908369593038) internal successors, (64051), 39070 states have internal predecessors, (64051), 0 states have call successors, (0), 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 07:38:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39071 states to 39071 states and 64051 transitions. [2022-07-12 07:38:18,497 INFO L78 Accepts]: Start accepts. Automaton has 39071 states and 64051 transitions. Word has length 132 [2022-07-12 07:38:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:18,497 INFO L495 AbstractCegarLoop]: Abstraction has 39071 states and 64051 transitions. [2022-07-12 07:38:18,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 07:38:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 39071 states and 64051 transitions. [2022-07-12 07:38:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 07:38:18,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:18,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:18,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:38:18,499 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1251457259, now seen corresponding path program 1 times [2022-07-12 07:38:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:18,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116564173] [2022-07-12 07:38:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:18,543 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 07:38:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116564173] [2022-07-12 07:38:18,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116564173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:18,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:18,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:38:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111290868] [2022-07-12 07:38:18,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:18,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:38:18,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:38:18,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:38:18,546 INFO L87 Difference]: Start difference. First operand 39071 states and 64051 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 07:38:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:38:23,066 INFO L93 Difference]: Finished difference Result 126537 states and 207711 transitions. [2022-07-12 07:38:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:38:23,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-07-12 07:38:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:38:23,283 INFO L225 Difference]: With dead ends: 126537 [2022-07-12 07:38:23,283 INFO L226 Difference]: Without dead ends: 87727 [2022-07-12 07:38:23,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:38:23,345 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 714 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:38:23,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1848 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:38:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87727 states. [2022-07-12 07:38:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87727 to 63256. [2022-07-12 07:38:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63256 states, 63255 states have (on average 1.6339894079519406) internal successors, (103358), 63255 states have internal predecessors, (103358), 0 states have call successors, (0), 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 07:38:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63256 states to 63256 states and 103358 transitions. [2022-07-12 07:38:27,926 INFO L78 Accepts]: Start accepts. Automaton has 63256 states and 103358 transitions. Word has length 133 [2022-07-12 07:38:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:38:27,926 INFO L495 AbstractCegarLoop]: Abstraction has 63256 states and 103358 transitions. [2022-07-12 07:38:27,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 07:38:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 63256 states and 103358 transitions. [2022-07-12 07:38:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 07:38:27,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:38:27,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:38:27,928 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:38:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:38:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash -193857308, now seen corresponding path program 1 times [2022-07-12 07:38:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:38:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794189567] [2022-07-12 07:38:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:38:27,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:38:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:38:27,991 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 07:38:27,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:38:27,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794189567] [2022-07-12 07:38:27,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794189567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:38:27,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:38:27,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:38:27,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7557857] [2022-07-12 07:38:27,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:38:27,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:38:27,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:38:27,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:38:27,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:38:27,993 INFO L87 Difference]: Start difference. First operand 63256 states and 103358 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)