./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_lcr.5.ufo.BOUNDED-10.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 c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:26:38,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:26:38,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:26:38,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:26:38,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:26:38,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:26:38,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:26:38,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:26:38,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:26:38,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:26:38,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:26:38,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:26:38,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:26:38,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:26:38,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:26:38,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:26:38,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:26:38,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:26:38,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:26:38,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:26:38,339 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:26:38,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:26:38,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:26:38,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:26:38,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:26:38,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:26:38,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:26:38,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:26:38,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:26:38,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:26:38,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:26:38,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:26:38,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:26:38,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:26:38,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:26:38,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:26:38,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:26:38,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:26:38,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:26:38,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:26:38,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:26:38,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:26:38,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:26:38,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:26:38,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:26:38,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:26:38,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:26:38,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:26:38,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:26:38,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:26:38,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:26:38,383 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:26:38,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:26:38,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:26:38,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:26:38,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:26:38,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:26:38,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:26:38,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:26:38,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:26:38,385 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:26:38,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:26:38,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:26:38,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:26:38,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:26:38,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:26:38,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:26:38,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:26:38,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:26:38,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:26:38,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:26:38,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:26:38,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:26:38,389 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:26:38,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:26:38,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:26:38,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 [2022-07-19 18:26:38,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:26:38,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:26:38,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:26:38,608 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:26:38,608 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:26:38,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-19 18:26:38,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd34781d/581c7bd6b1814fe2a8fadaabffe222ba/FLAGe52e95d00 [2022-07-19 18:26:39,051 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:26:39,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-19 18:26:39,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd34781d/581c7bd6b1814fe2a8fadaabffe222ba/FLAGe52e95d00 [2022-07-19 18:26:39,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd34781d/581c7bd6b1814fe2a8fadaabffe222ba [2022-07-19 18:26:39,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:26:39,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:26:39,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:26:39,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:26:39,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:26:39,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f60f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39, skipping insertion in model container [2022-07-19 18:26:39,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:26:39,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:26:39,622 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_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2022-07-19 18:26:39,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:26:39,645 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:26:39,668 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_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2022-07-19 18:26:39,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:26:39,693 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:26:39,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39 WrapperNode [2022-07-19 18:26:39,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:26:39,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:26:39,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:26:39,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:26:39,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,726 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 417 [2022-07-19 18:26:39,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:26:39,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:26:39,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:26:39,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:26:39,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:26:39,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:26:39,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:26:39,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:26:39,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (1/1) ... [2022-07-19 18:26:39,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:26:39,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:26:39,782 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) [2022-07-19 18:26:39,784 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 [2022-07-19 18:26:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:26:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:26:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:26:39,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:26:39,928 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:26:39,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:26:40,223 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:26:40,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:26:40,231 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:26:40,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:26:40 BoogieIcfgContainer [2022-07-19 18:26:40,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:26:40,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:26:40,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:26:40,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:26:40,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:26:39" (1/3) ... [2022-07-19 18:26:40,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3560c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:26:40, skipping insertion in model container [2022-07-19 18:26:40,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:39" (2/3) ... [2022-07-19 18:26:40,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3560c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:26:40, skipping insertion in model container [2022-07-19 18:26:40,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:26:40" (3/3) ... [2022-07-19 18:26:40,241 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-19 18:26:40,251 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:26:40,252 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 18:26:40,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:26:40,305 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@3ce04553, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2115f288 [2022-07-19 18:26:40,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 18:26:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 18:26:40,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:40,329 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] [2022-07-19 18:26:40,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -857023919, now seen corresponding path program 1 times [2022-07-19 18:26:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:40,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717822212] [2022-07-19 18:26:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:40,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:40,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717822212] [2022-07-19 18:26:40,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717822212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:40,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:40,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:26:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266787471] [2022-07-19 18:26:40,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:40,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:26:40,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:26:40,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:40,663 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 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 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:40,728 INFO L93 Difference]: Finished difference Result 215 states and 350 transitions. [2022-07-19 18:26:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:26:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-19 18:26:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:40,742 INFO L225 Difference]: With dead ends: 215 [2022-07-19 18:26:40,742 INFO L226 Difference]: Without dead ends: 146 [2022-07-19 18:26:40,746 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 [2022-07-19 18:26:40,748 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 115 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:40,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 341 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-07-19 18:26:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2022-07-19 18:26:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4615384615384615) internal successors, (209), 143 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2022-07-19 18:26:40,786 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 59 [2022-07-19 18:26:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:40,787 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2022-07-19 18:26:40,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2022-07-19 18:26:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 18:26:40,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:40,789 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] [2022-07-19 18:26:40,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:26:40,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:40,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1265777508, now seen corresponding path program 1 times [2022-07-19 18:26:40,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:40,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104588766] [2022-07-19 18:26:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:40,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:40,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:40,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104588766] [2022-07-19 18:26:40,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104588766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:40,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:40,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:26:40,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204165297] [2022-07-19 18:26:40,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:40,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:26:40,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:40,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:26:40,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:40,872 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:40,898 INFO L93 Difference]: Finished difference Result 348 states and 533 transitions. [2022-07-19 18:26:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:26:40,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-19 18:26:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:40,900 INFO L225 Difference]: With dead ends: 348 [2022-07-19 18:26:40,900 INFO L226 Difference]: Without dead ends: 238 [2022-07-19 18:26:40,901 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 [2022-07-19 18:26:40,902 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 80 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 293 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 [2022-07-19 18:26:40,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 293 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-07-19 18:26:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-07-19 18:26:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 235 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2022-07-19 18:26:40,919 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 60 [2022-07-19 18:26:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:40,919 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2022-07-19 18:26:40,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2022-07-19 18:26:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 18:26:40,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:40,921 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] [2022-07-19 18:26:40,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:26:40,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -943758039, now seen corresponding path program 1 times [2022-07-19 18:26:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:40,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446093017] [2022-07-19 18:26:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:40,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:40,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446093017] [2022-07-19 18:26:40,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446093017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:40,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:40,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:26:40,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993295075] [2022-07-19 18:26:40,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:40,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:26:40,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:26:40,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:40,983 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:41,016 INFO L93 Difference]: Finished difference Result 608 states and 945 transitions. [2022-07-19 18:26:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:26:41,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-19 18:26:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:41,018 INFO L225 Difference]: With dead ends: 608 [2022-07-19 18:26:41,018 INFO L226 Difference]: Without dead ends: 406 [2022-07-19 18:26:41,019 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 [2022-07-19 18:26:41,020 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 75 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 289 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 [2022-07-19 18:26:41,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-07-19 18:26:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2022-07-19 18:26:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5359801488833746) internal successors, (619), 403 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 619 transitions. [2022-07-19 18:26:41,043 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 619 transitions. Word has length 61 [2022-07-19 18:26:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:41,043 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 619 transitions. [2022-07-19 18:26:41,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 619 transitions. [2022-07-19 18:26:41,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 18:26:41,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:41,048 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] [2022-07-19 18:26:41,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:26:41,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:41,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1997598018, now seen corresponding path program 1 times [2022-07-19 18:26:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520505698] [2022-07-19 18:26:41,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:41,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:41,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520505698] [2022-07-19 18:26:41,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520505698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:41,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:41,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:26:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564774645] [2022-07-19 18:26:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:41,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:26:41,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:26:41,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:41,095 INFO L87 Difference]: Start difference. First operand 404 states and 619 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:41,132 INFO L93 Difference]: Finished difference Result 1080 states and 1685 transitions. [2022-07-19 18:26:41,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:26:41,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-19 18:26:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:41,136 INFO L225 Difference]: With dead ends: 1080 [2022-07-19 18:26:41,136 INFO L226 Difference]: Without dead ends: 710 [2022-07-19 18:26:41,137 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 [2022-07-19 18:26:41,138 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 70 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 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 [2022-07-19 18:26:41,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:41,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-19 18:26:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 708. [2022-07-19 18:26:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.5431400282885432) internal successors, (1091), 707 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1091 transitions. [2022-07-19 18:26:41,169 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1091 transitions. Word has length 62 [2022-07-19 18:26:41,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:41,169 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1091 transitions. [2022-07-19 18:26:41,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1091 transitions. [2022-07-19 18:26:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 18:26:41,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:41,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:41,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:26:41,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1910647641, now seen corresponding path program 1 times [2022-07-19 18:26:41,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:41,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074665811] [2022-07-19 18:26:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:41,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074665811] [2022-07-19 18:26:41,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074665811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:41,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:41,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:26:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904267119] [2022-07-19 18:26:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:26:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:26:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:41,268 INFO L87 Difference]: Start difference. First operand 708 states and 1091 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:41,323 INFO L93 Difference]: Finished difference Result 1928 states and 2997 transitions. [2022-07-19 18:26:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:26:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-19 18:26:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:41,331 INFO L225 Difference]: With dead ends: 1928 [2022-07-19 18:26:41,331 INFO L226 Difference]: Without dead ends: 1254 [2022-07-19 18:26:41,333 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 [2022-07-19 18:26:41,344 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 65 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 281 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 [2022-07-19 18:26:41,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-07-19 18:26:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2022-07-19 18:26:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.5371702637889688) internal successors, (1923), 1251 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1923 transitions. [2022-07-19 18:26:41,405 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1923 transitions. Word has length 63 [2022-07-19 18:26:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:41,406 INFO L495 AbstractCegarLoop]: Abstraction has 1252 states and 1923 transitions. [2022-07-19 18:26:41,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1923 transitions. [2022-07-19 18:26:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:26:41,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:41,407 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] [2022-07-19 18:26:41,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:26:41,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2007440880, now seen corresponding path program 1 times [2022-07-19 18:26:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:41,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410398412] [2022-07-19 18:26:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:41,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:41,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:41,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410398412] [2022-07-19 18:26:41,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410398412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:41,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:41,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:41,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987770725] [2022-07-19 18:26:41,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:41,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:41,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:41,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:41,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:41,503 INFO L87 Difference]: Start difference. First operand 1252 states and 1923 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:42,176 INFO L93 Difference]: Finished difference Result 13432 states and 20813 transitions. [2022-07-19 18:26:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:26:42,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-19 18:26:42,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:42,211 INFO L225 Difference]: With dead ends: 13432 [2022-07-19 18:26:42,211 INFO L226 Difference]: Without dead ends: 12214 [2022-07-19 18:26:42,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-19 18:26:42,215 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1155 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:42,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1423 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12214 states. [2022-07-19 18:26:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12214 to 2468. [2022-07-19 18:26:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5188488042156465) internal successors, (3747), 2467 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3747 transitions. [2022-07-19 18:26:42,457 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3747 transitions. Word has length 64 [2022-07-19 18:26:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:42,457 INFO L495 AbstractCegarLoop]: Abstraction has 2468 states and 3747 transitions. [2022-07-19 18:26:42,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3747 transitions. [2022-07-19 18:26:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 18:26:42,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:42,458 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] [2022-07-19 18:26:42,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:26:42,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:42,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash -190448501, now seen corresponding path program 1 times [2022-07-19 18:26:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:42,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068948957] [2022-07-19 18:26:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:42,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:42,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068948957] [2022-07-19 18:26:42,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068948957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:42,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:42,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406737842] [2022-07-19 18:26:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:42,647 INFO L87 Difference]: Start difference. First operand 2468 states and 3747 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:42,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:42,967 INFO L93 Difference]: Finished difference Result 4904 states and 7461 transitions. [2022-07-19 18:26:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:42,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-19 18:26:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:42,975 INFO L225 Difference]: With dead ends: 4904 [2022-07-19 18:26:42,975 INFO L226 Difference]: Without dead ends: 2470 [2022-07-19 18:26:42,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:26:42,978 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 251 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:42,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 582 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-07-19 18:26:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2468. [2022-07-19 18:26:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5058775841102554) internal successors, (3715), 2467 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3715 transitions. [2022-07-19 18:26:43,161 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3715 transitions. Word has length 66 [2022-07-19 18:26:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:43,161 INFO L495 AbstractCegarLoop]: Abstraction has 2468 states and 3715 transitions. [2022-07-19 18:26:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3715 transitions. [2022-07-19 18:26:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 18:26:43,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:43,163 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] [2022-07-19 18:26:43,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:26:43,163 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -211451156, now seen corresponding path program 1 times [2022-07-19 18:26:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:43,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508654236] [2022-07-19 18:26:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:43,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:43,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508654236] [2022-07-19 18:26:43,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508654236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:43,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:43,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:26:43,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181198656] [2022-07-19 18:26:43,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:43,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:26:43,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:43,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:26:43,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:43,193 INFO L87 Difference]: Start difference. First operand 2468 states and 3715 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:43,411 INFO L93 Difference]: Finished difference Result 6074 states and 9159 transitions. [2022-07-19 18:26:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:26:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-19 18:26:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:43,423 INFO L225 Difference]: With dead ends: 6074 [2022-07-19 18:26:43,423 INFO L226 Difference]: Without dead ends: 3640 [2022-07-19 18:26:43,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:43,427 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 56 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:43,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 250 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-07-19 18:26:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2022-07-19 18:26:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4927137750893593) internal successors, (5429), 3637 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5429 transitions. [2022-07-19 18:26:43,663 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5429 transitions. Word has length 66 [2022-07-19 18:26:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:43,664 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5429 transitions. [2022-07-19 18:26:43,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5429 transitions. [2022-07-19 18:26:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 18:26:43,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:43,665 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] [2022-07-19 18:26:43,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:26:43,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:43,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1610845590, now seen corresponding path program 1 times [2022-07-19 18:26:43,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:43,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846590924] [2022-07-19 18:26:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:43,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846590924] [2022-07-19 18:26:43,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846590924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:43,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:43,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:43,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693422428] [2022-07-19 18:26:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:43,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:43,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:43,727 INFO L87 Difference]: Start difference. First operand 3638 states and 5429 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:44,086 INFO L93 Difference]: Finished difference Result 7240 states and 10822 transitions. [2022-07-19 18:26:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-19 18:26:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:44,097 INFO L225 Difference]: With dead ends: 7240 [2022-07-19 18:26:44,097 INFO L226 Difference]: Without dead ends: 3638 [2022-07-19 18:26:44,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:44,102 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 337 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:44,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 82 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-07-19 18:26:44,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-07-19 18:26:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4751168545504536) internal successors, (5365), 3637 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5365 transitions. [2022-07-19 18:26:44,376 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5365 transitions. Word has length 67 [2022-07-19 18:26:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:44,377 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5365 transitions. [2022-07-19 18:26:44,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5365 transitions. [2022-07-19 18:26:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 18:26:44,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:44,378 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] [2022-07-19 18:26:44,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:26:44,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1242574363, now seen corresponding path program 1 times [2022-07-19 18:26:44,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:44,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847139978] [2022-07-19 18:26:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:44,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:44,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847139978] [2022-07-19 18:26:44,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847139978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:44,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:44,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:44,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49654996] [2022-07-19 18:26:44,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:44,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:44,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:44,415 INFO L87 Difference]: Start difference. First operand 3638 states and 5365 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:44,716 INFO L93 Difference]: Finished difference Result 7240 states and 10694 transitions. [2022-07-19 18:26:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-19 18:26:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:44,724 INFO L225 Difference]: With dead ends: 7240 [2022-07-19 18:26:44,724 INFO L226 Difference]: Without dead ends: 3638 [2022-07-19 18:26:44,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:44,728 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 282 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:44,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 114 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-07-19 18:26:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-07-19 18:26:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4619191641462743) internal successors, (5317), 3637 states have internal predecessors, (5317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5317 transitions. [2022-07-19 18:26:45,021 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5317 transitions. Word has length 67 [2022-07-19 18:26:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:45,021 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5317 transitions. [2022-07-19 18:26:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5317 transitions. [2022-07-19 18:26:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 18:26:45,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:45,022 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] [2022-07-19 18:26:45,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:26:45,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1771864864, now seen corresponding path program 1 times [2022-07-19 18:26:45,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:45,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136018775] [2022-07-19 18:26:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:45,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:45,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136018775] [2022-07-19 18:26:45,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136018775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:45,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:45,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:45,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832307728] [2022-07-19 18:26:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:45,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:45,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:45,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:45,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:45,059 INFO L87 Difference]: Start difference. First operand 3638 states and 5317 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:45,412 INFO L93 Difference]: Finished difference Result 7240 states and 10598 transitions. [2022-07-19 18:26:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-19 18:26:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:45,419 INFO L225 Difference]: With dead ends: 7240 [2022-07-19 18:26:45,419 INFO L226 Difference]: Without dead ends: 3638 [2022-07-19 18:26:45,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:45,424 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 305 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:45,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 98 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-07-19 18:26:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-07-19 18:26:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.448721473742095) internal successors, (5269), 3637 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5269 transitions. [2022-07-19 18:26:45,784 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5269 transitions. Word has length 67 [2022-07-19 18:26:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:45,784 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5269 transitions. [2022-07-19 18:26:45,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5269 transitions. [2022-07-19 18:26:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 18:26:45,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:45,785 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] [2022-07-19 18:26:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:26:45,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1643779557, now seen corresponding path program 1 times [2022-07-19 18:26:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:45,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669270674] [2022-07-19 18:26:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:45,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:45,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:45,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669270674] [2022-07-19 18:26:45,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669270674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:45,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:45,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:26:45,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837805580] [2022-07-19 18:26:45,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:45,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:45,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:45,837 INFO L87 Difference]: Start difference. First operand 3638 states and 5269 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:46,406 INFO L93 Difference]: Finished difference Result 6558 states and 9468 transitions. [2022-07-19 18:26:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 18:26:46,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-19 18:26:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:46,417 INFO L225 Difference]: With dead ends: 6558 [2022-07-19 18:26:46,418 INFO L226 Difference]: Without dead ends: 6556 [2022-07-19 18:26:46,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 18:26:46,419 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 168 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:46,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 569 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2022-07-19 18:26:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 3766. [2022-07-19 18:26:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3765 states have (on average 1.4292164674634795) internal successors, (5381), 3765 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5381 transitions. [2022-07-19 18:26:46,772 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5381 transitions. Word has length 67 [2022-07-19 18:26:46,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:46,772 INFO L495 AbstractCegarLoop]: Abstraction has 3766 states and 5381 transitions. [2022-07-19 18:26:46,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5381 transitions. [2022-07-19 18:26:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 18:26:46,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:46,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:46,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:26:46,775 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:46,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:46,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2083961666, now seen corresponding path program 1 times [2022-07-19 18:26:46,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:46,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312429248] [2022-07-19 18:26:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:46,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 18:26:46,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:46,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312429248] [2022-07-19 18:26:46,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312429248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:46,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:46,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119146534] [2022-07-19 18:26:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:46,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:46,831 INFO L87 Difference]: Start difference. First operand 3766 states and 5381 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:48,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:48,782 INFO L93 Difference]: Finished difference Result 23122 states and 33083 transitions. [2022-07-19 18:26:48,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:48,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 93 [2022-07-19 18:26:48,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:48,816 INFO L225 Difference]: With dead ends: 23122 [2022-07-19 18:26:48,816 INFO L226 Difference]: Without dead ends: 19392 [2022-07-19 18:26:48,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:48,827 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 788 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:48,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 872 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19392 states. [2022-07-19 18:26:49,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19392 to 7494. [2022-07-19 18:26:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7493 states have (on average 1.4249299346056319) internal successors, (10677), 7493 states have internal predecessors, (10677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 10677 transitions. [2022-07-19 18:26:49,703 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 10677 transitions. Word has length 93 [2022-07-19 18:26:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:49,703 INFO L495 AbstractCegarLoop]: Abstraction has 7494 states and 10677 transitions. [2022-07-19 18:26:49,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 10677 transitions. [2022-07-19 18:26:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 18:26:49,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:49,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:49,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:26:49,706 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:49,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1513365710, now seen corresponding path program 1 times [2022-07-19 18:26:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:49,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778604310] [2022-07-19 18:26:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 18:26:49,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:49,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778604310] [2022-07-19 18:26:49,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778604310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:49,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:49,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021133851] [2022-07-19 18:26:49,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:49,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:49,761 INFO L87 Difference]: Start difference. First operand 7494 states and 10677 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:52,382 INFO L93 Difference]: Finished difference Result 26850 states and 38379 transitions. [2022-07-19 18:26:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:52,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 93 [2022-07-19 18:26:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:52,454 INFO L225 Difference]: With dead ends: 26850 [2022-07-19 18:26:52,455 INFO L226 Difference]: Without dead ends: 23120 [2022-07-19 18:26:52,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:52,465 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 841 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:52,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 853 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23120 states. [2022-07-19 18:26:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23120 to 13094. [2022-07-19 18:26:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13094 states, 13093 states have (on average 1.4191552738104332) internal successors, (18581), 13093 states have internal predecessors, (18581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13094 states to 13094 states and 18581 transitions. [2022-07-19 18:26:54,082 INFO L78 Accepts]: Start accepts. Automaton has 13094 states and 18581 transitions. Word has length 93 [2022-07-19 18:26:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:54,082 INFO L495 AbstractCegarLoop]: Abstraction has 13094 states and 18581 transitions. [2022-07-19 18:26:54,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13094 states and 18581 transitions. [2022-07-19 18:26:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 18:26:54,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:54,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:54,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:26:54,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash 359419604, now seen corresponding path program 1 times [2022-07-19 18:26:54,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:54,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372640251] [2022-07-19 18:26:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 18:26:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:54,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372640251] [2022-07-19 18:26:54,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372640251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:54,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:54,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956540303] [2022-07-19 18:26:54,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:54,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:54,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:54,148 INFO L87 Difference]: Start difference. First operand 13094 states and 18581 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:57,002 INFO L93 Difference]: Finished difference Result 30578 states and 43675 transitions. [2022-07-19 18:26:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:57,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 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 93 [2022-07-19 18:26:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:57,039 INFO L225 Difference]: With dead ends: 30578 [2022-07-19 18:26:57,040 INFO L226 Difference]: Without dead ends: 26848 [2022-07-19 18:26:57,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:57,052 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 782 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:57,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 890 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26848 states. [2022-07-19 18:26:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26848 to 16822. [2022-07-19 18:26:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16822 states, 16821 states have (on average 1.4194756554307115) internal successors, (23877), 16821 states have internal predecessors, (23877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16822 states to 16822 states and 23877 transitions. [2022-07-19 18:26:59,355 INFO L78 Accepts]: Start accepts. Automaton has 16822 states and 23877 transitions. Word has length 93 [2022-07-19 18:26:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:59,355 INFO L495 AbstractCegarLoop]: Abstraction has 16822 states and 23877 transitions. [2022-07-19 18:26:59,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 16822 states and 23877 transitions. [2022-07-19 18:26:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 18:26:59,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:59,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:59,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:26:59,359 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash 655465032, now seen corresponding path program 1 times [2022-07-19 18:26:59,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:59,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516261155] [2022-07-19 18:26:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:59,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 18:26:59,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:59,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516261155] [2022-07-19 18:26:59,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516261155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:59,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:59,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889362818] [2022-07-19 18:26:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:59,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:59,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:59,410 INFO L87 Difference]: Start difference. First operand 16822 states and 23877 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:27:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:02,874 INFO L93 Difference]: Finished difference Result 34306 states and 48971 transitions. [2022-07-19 18:27:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:27:02,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 93 [2022-07-19 18:27:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:02,912 INFO L225 Difference]: With dead ends: 34306 [2022-07-19 18:27:02,912 INFO L226 Difference]: Without dead ends: 30576 [2022-07-19 18:27:02,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:27:02,922 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 725 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:02,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 978 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:27:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30576 states. [2022-07-19 18:27:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30576 to 20550. [2022-07-19 18:27:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20550 states, 20549 states have (on average 1.4196797897707918) internal successors, (29173), 20549 states have internal predecessors, (29173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:27:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20550 states to 20550 states and 29173 transitions. [2022-07-19 18:27:05,569 INFO L78 Accepts]: Start accepts. Automaton has 20550 states and 29173 transitions. Word has length 93 [2022-07-19 18:27:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:05,570 INFO L495 AbstractCegarLoop]: Abstraction has 20550 states and 29173 transitions. [2022-07-19 18:27:05,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:27:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 20550 states and 29173 transitions. [2022-07-19 18:27:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 18:27:05,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:05,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:27:05,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 18:27:05,574 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash -235568196, now seen corresponding path program 1 times [2022-07-19 18:27:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:05,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518358101] [2022-07-19 18:27:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:05,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 18:27:05,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:05,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518358101] [2022-07-19 18:27:05,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518358101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:05,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:05,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:27:05,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437423048] [2022-07-19 18:27:05,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:05,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:27:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:05,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:27:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:27:05,626 INFO L87 Difference]: Start difference. First operand 20550 states and 29173 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:27:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:09,774 INFO L93 Difference]: Finished difference Result 35698 states and 51003 transitions. [2022-07-19 18:27:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:27:09,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 93 [2022-07-19 18:27:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:09,824 INFO L225 Difference]: With dead ends: 35698 [2022-07-19 18:27:09,824 INFO L226 Difference]: Without dead ends: 33136 [2022-07-19 18:27:09,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:27:09,839 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 787 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:09,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1016 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:27:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33136 states. [2022-07-19 18:27:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33136 to 23110. [2022-07-19 18:27:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23110 states, 23109 states have (on average 1.4216539010775022) internal successors, (32853), 23109 states have internal predecessors, (32853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:27:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23110 states to 23110 states and 32853 transitions. [2022-07-19 18:27:13,030 INFO L78 Accepts]: Start accepts. Automaton has 23110 states and 32853 transitions. Word has length 93 [2022-07-19 18:27:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:13,032 INFO L495 AbstractCegarLoop]: Abstraction has 23110 states and 32853 transitions. [2022-07-19 18:27:13,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:27:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 23110 states and 32853 transitions. [2022-07-19 18:27:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 18:27:13,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:13,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:27:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 18:27:13,036 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2095026606, now seen corresponding path program 1 times [2022-07-19 18:27:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:13,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596103434] [2022-07-19 18:27:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:27:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:13,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596103434] [2022-07-19 18:27:13,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596103434] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 18:27:13,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996966572] [2022-07-19 18:27:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:13,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:27:13,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:27:13,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 18:27:13,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 18:27:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:13,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-19 18:27:13,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 18:27:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:27:13,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 18:27:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:27:13,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996966572] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 18:27:13,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 18:27:13,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2022-07-19 18:27:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600529049] [2022-07-19 18:27:13,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 18:27:13,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 18:27:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 18:27:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:27:13,866 INFO L87 Difference]: Start difference. First operand 23110 states and 32853 transitions. Second operand has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 22 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)