./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5be25d34b5f565c0e61b447a9da3cd9d228084b5ddd898e062981f46972caa8 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:50:21,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:50:21,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:50:21,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:50:21,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:50:21,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:50:21,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:50:21,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:50:21,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:50:21,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:50:21,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:50:21,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:50:21,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:50:21,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:50:21,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:50:21,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:50:21,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:50:21,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:50:21,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:50:21,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:50:21,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:50:21,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:50:21,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:50:21,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:50:21,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:50:21,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:50:21,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:50:21,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:50:21,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:50:21,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:50:21,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:50:21,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:50:21,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:50:21,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:50:21,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:50:21,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:50:21,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:50:21,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:50:21,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:50:21,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:50:21,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:50:21,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:50:21,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:50:21,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:50:21,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:50:21,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:50:21,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:50:21,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:50:21,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:50:21,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:50:21,628 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:50:21,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:50:21,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:50:21,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:50:21,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:50:21,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:50:21,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:50:21,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:50:21,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:50:21,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:50:21,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:50:21,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:50:21,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:50:21,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:50:21,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:50:21,632 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:50:21,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:50:21,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:50:21,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:50:21,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5be25d34b5f565c0e61b447a9da3cd9d228084b5ddd898e062981f46972caa8 [2021-12-17 15:50:21,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:50:21,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:50:21,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:50:21,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:50:21,834 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:50:21,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2021-12-17 15:50:21,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8142cfaa1/d1f16e2bf1eb49328ce35bacb6ed2c19/FLAGb5d1c9271 [2021-12-17 15:50:22,255 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:50:22,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2021-12-17 15:50:22,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8142cfaa1/d1f16e2bf1eb49328ce35bacb6ed2c19/FLAGb5d1c9271 [2021-12-17 15:50:22,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8142cfaa1/d1f16e2bf1eb49328ce35bacb6ed2c19 [2021-12-17 15:50:22,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:50:22,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:50:22,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:50:22,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:50:22,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:50:22,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56cdbdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22, skipping insertion in model container [2021-12-17 15:50:22,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:50:22,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:50:22,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2021-12-17 15:50:22,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:50:22,468 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:50:22,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2021-12-17 15:50:22,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:50:22,514 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:50:22,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22 WrapperNode [2021-12-17 15:50:22,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:50:22,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:50:22,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:50:22,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:50:22,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,543 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 313 [2021-12-17 15:50:22,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:50:22,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:50:22,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:50:22,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:50:22,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:50:22,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:50:22,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:50:22,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:50:22,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (1/1) ... [2021-12-17 15:50:22,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:50:22,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:50:22,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 15:50:22,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 15:50:22,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:50:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:50:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:50:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:50:22,688 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:50:22,689 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:50:22,986 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:50:22,992 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:50:22,995 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 15:50:22,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:50:22 BoogieIcfgContainer [2021-12-17 15:50:22,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:50:22,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:50:22,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:50:23,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:50:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:50:22" (1/3) ... [2021-12-17 15:50:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138c4b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:50:23, skipping insertion in model container [2021-12-17 15:50:23,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:50:22" (2/3) ... [2021-12-17 15:50:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138c4b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:50:23, skipping insertion in model container [2021-12-17 15:50:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:50:22" (3/3) ... [2021-12-17 15:50:23,002 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2021-12-17 15:50:23,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:50:23,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:50:23,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:50:23,054 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 15:50:23,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:50:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.694736842105263) internal successors, (161), 96 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-17 15:50:23,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:23,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:23,079 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1799424214, now seen corresponding path program 1 times [2021-12-17 15:50:23,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:23,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432973767] [2021-12-17 15:50:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:23,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:23,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:23,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432973767] [2021-12-17 15:50:23,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432973767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:23,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:23,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 15:50:23,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855616234] [2021-12-17 15:50:23,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:23,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 15:50:23,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 15:50:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:50:23,262 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.694736842105263) internal successors, (161), 96 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:23,283 INFO L93 Difference]: Finished difference Result 165 states and 268 transitions. [2021-12-17 15:50:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 15:50:23,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-12-17 15:50:23,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:23,290 INFO L225 Difference]: With dead ends: 165 [2021-12-17 15:50:23,290 INFO L226 Difference]: Without dead ends: 93 [2021-12-17 15:50:23,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:50:23,294 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:23,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-17 15:50:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-12-17 15:50:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.673913043478261) internal successors, (154), 92 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 154 transitions. [2021-12-17 15:50:23,319 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 154 transitions. Word has length 29 [2021-12-17 15:50:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:23,319 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 154 transitions. [2021-12-17 15:50:23,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 154 transitions. [2021-12-17 15:50:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-17 15:50:23,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:23,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:23,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:50:23,323 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1665410708, now seen corresponding path program 1 times [2021-12-17 15:50:23,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:23,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512858983] [2021-12-17 15:50:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:23,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:23,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:23,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512858983] [2021-12-17 15:50:23,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512858983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:23,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:23,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:50:23,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119222817] [2021-12-17 15:50:23,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:23,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:50:23,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:50:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:50:23,379 INFO L87 Difference]: Start difference. First operand 93 states and 154 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:23,448 INFO L93 Difference]: Finished difference Result 223 states and 358 transitions. [2021-12-17 15:50:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:50:23,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-12-17 15:50:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:23,452 INFO L225 Difference]: With dead ends: 223 [2021-12-17 15:50:23,453 INFO L226 Difference]: Without dead ends: 156 [2021-12-17 15:50:23,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:50:23,455 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 102 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:23,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 571 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-17 15:50:23,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 93. [2021-12-17 15:50:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2021-12-17 15:50:23,470 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 29 [2021-12-17 15:50:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:23,471 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2021-12-17 15:50:23,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2021-12-17 15:50:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 15:50:23,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:23,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:23,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:50:23,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1640520051, now seen corresponding path program 1 times [2021-12-17 15:50:23,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:23,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965613959] [2021-12-17 15:50:23,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:23,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:23,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:23,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965613959] [2021-12-17 15:50:23,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965613959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:23,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:23,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:23,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581922560] [2021-12-17 15:50:23,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:23,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:23,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:23,570 INFO L87 Difference]: Start difference. First operand 93 states and 130 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:23,589 INFO L93 Difference]: Finished difference Result 207 states and 310 transitions. [2021-12-17 15:50:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:23,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-12-17 15:50:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:23,591 INFO L225 Difference]: With dead ends: 207 [2021-12-17 15:50:23,593 INFO L226 Difference]: Without dead ends: 144 [2021-12-17 15:50:23,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:23,594 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 84 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:23,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-17 15:50:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2021-12-17 15:50:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.475177304964539) internal successors, (208), 141 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 208 transitions. [2021-12-17 15:50:23,611 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 208 transitions. Word has length 52 [2021-12-17 15:50:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:23,611 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 208 transitions. [2021-12-17 15:50:23,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 208 transitions. [2021-12-17 15:50:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-17 15:50:23,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:23,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:23,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:50:23,615 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash -609394571, now seen corresponding path program 1 times [2021-12-17 15:50:23,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:23,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091651557] [2021-12-17 15:50:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:23,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:23,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:23,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091651557] [2021-12-17 15:50:23,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091651557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:23,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:23,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:23,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122050814] [2021-12-17 15:50:23,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:23,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:23,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:23,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:23,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:23,683 INFO L87 Difference]: Start difference. First operand 142 states and 208 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:23,696 INFO L93 Difference]: Finished difference Result 342 states and 524 transitions. [2021-12-17 15:50:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:23,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-12-17 15:50:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:23,698 INFO L225 Difference]: With dead ends: 342 [2021-12-17 15:50:23,698 INFO L226 Difference]: Without dead ends: 230 [2021-12-17 15:50:23,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:23,700 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 79 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:23,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-17 15:50:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2021-12-17 15:50:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 343 transitions. [2021-12-17 15:50:23,712 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 343 transitions. Word has length 53 [2021-12-17 15:50:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:23,712 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 343 transitions. [2021-12-17 15:50:23,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 343 transitions. [2021-12-17 15:50:23,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 15:50:23,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:23,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:23,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:50:23,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1908001763, now seen corresponding path program 1 times [2021-12-17 15:50:23,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:23,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735924380] [2021-12-17 15:50:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:23,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:23,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:23,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735924380] [2021-12-17 15:50:23,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735924380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:23,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:23,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:23,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128326498] [2021-12-17 15:50:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:23,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:23,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:23,758 INFO L87 Difference]: Start difference. First operand 228 states and 343 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:23,782 INFO L93 Difference]: Finished difference Result 576 states and 889 transitions. [2021-12-17 15:50:23,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:23,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-12-17 15:50:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:23,788 INFO L225 Difference]: With dead ends: 576 [2021-12-17 15:50:23,789 INFO L226 Difference]: Without dead ends: 378 [2021-12-17 15:50:23,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:23,793 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 74 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:23,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 265 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-17 15:50:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2021-12-17 15:50:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.5226666666666666) internal successors, (571), 375 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 571 transitions. [2021-12-17 15:50:23,824 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 571 transitions. Word has length 54 [2021-12-17 15:50:23,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:23,825 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 571 transitions. [2021-12-17 15:50:23,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 571 transitions. [2021-12-17 15:50:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-17 15:50:23,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:23,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:23,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:50:23,830 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash 553512453, now seen corresponding path program 1 times [2021-12-17 15:50:23,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:23,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463401875] [2021-12-17 15:50:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:23,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:23,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:23,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463401875] [2021-12-17 15:50:23,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463401875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:23,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:23,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:50:23,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462297346] [2021-12-17 15:50:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:23,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:50:23,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:50:23,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:50:23,912 INFO L87 Difference]: Start difference. First operand 376 states and 571 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:24,015 INFO L93 Difference]: Finished difference Result 2106 states and 3276 transitions. [2021-12-17 15:50:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:50:24,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-12-17 15:50:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:24,023 INFO L225 Difference]: With dead ends: 2106 [2021-12-17 15:50:24,023 INFO L226 Difference]: Without dead ends: 1760 [2021-12-17 15:50:24,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:50:24,025 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 725 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:24,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 1064 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2021-12-17 15:50:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 720. [2021-12-17 15:50:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.5229485396383866) internal successors, (1095), 719 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1095 transitions. [2021-12-17 15:50:24,063 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1095 transitions. Word has length 55 [2021-12-17 15:50:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:24,064 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 1095 transitions. [2021-12-17 15:50:24,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1095 transitions. [2021-12-17 15:50:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-17 15:50:24,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:24,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:24,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:50:24,065 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash -404306473, now seen corresponding path program 1 times [2021-12-17 15:50:24,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:24,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611513764] [2021-12-17 15:50:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:24,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:24,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:24,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611513764] [2021-12-17 15:50:24,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611513764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:24,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:24,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:50:24,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697461544] [2021-12-17 15:50:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:24,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:50:24,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:50:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:50:24,180 INFO L87 Difference]: Start difference. First operand 720 states and 1095 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:24,282 INFO L93 Difference]: Finished difference Result 3216 states and 4899 transitions. [2021-12-17 15:50:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:50:24,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-12-17 15:50:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:24,290 INFO L225 Difference]: With dead ends: 3216 [2021-12-17 15:50:24,290 INFO L226 Difference]: Without dead ends: 2526 [2021-12-17 15:50:24,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:50:24,293 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 336 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:24,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 604 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-12-17 15:50:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2520. [2021-12-17 15:50:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2519 states have (on average 1.5144898769352917) internal successors, (3815), 2519 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3815 transitions. [2021-12-17 15:50:24,375 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3815 transitions. Word has length 56 [2021-12-17 15:50:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:24,375 INFO L470 AbstractCegarLoop]: Abstraction has 2520 states and 3815 transitions. [2021-12-17 15:50:24,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3815 transitions. [2021-12-17 15:50:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-17 15:50:24,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:24,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:24,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:50:24,379 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:24,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash 399274429, now seen corresponding path program 1 times [2021-12-17 15:50:24,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:24,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51048310] [2021-12-17 15:50:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:24,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:24,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:24,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51048310] [2021-12-17 15:50:24,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51048310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:24,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:24,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:24,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239702803] [2021-12-17 15:50:24,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:24,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:24,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:24,429 INFO L87 Difference]: Start difference. First operand 2520 states and 3815 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:24,530 INFO L93 Difference]: Finished difference Result 6924 states and 10425 transitions. [2021-12-17 15:50:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-12-17 15:50:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:24,544 INFO L225 Difference]: With dead ends: 6924 [2021-12-17 15:50:24,544 INFO L226 Difference]: Without dead ends: 4434 [2021-12-17 15:50:24,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:24,548 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 88 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:24,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2021-12-17 15:50:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 4432. [2021-12-17 15:50:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4431 states have (on average 1.4838636876551567) internal successors, (6575), 4431 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 6575 transitions. [2021-12-17 15:50:24,685 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 6575 transitions. Word has length 56 [2021-12-17 15:50:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:24,686 INFO L470 AbstractCegarLoop]: Abstraction has 4432 states and 6575 transitions. [2021-12-17 15:50:24,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 6575 transitions. [2021-12-17 15:50:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-17 15:50:24,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:24,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:24,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:50:24,688 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1681995988, now seen corresponding path program 1 times [2021-12-17 15:50:24,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375914782] [2021-12-17 15:50:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:24,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:24,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:24,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375914782] [2021-12-17 15:50:24,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375914782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:24,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:24,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:50:24,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854922884] [2021-12-17 15:50:24,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:24,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:50:24,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:24,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:50:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:50:24,746 INFO L87 Difference]: Start difference. First operand 4432 states and 6575 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:24,961 INFO L93 Difference]: Finished difference Result 9346 states and 13632 transitions. [2021-12-17 15:50:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:50:24,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-12-17 15:50:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:24,987 INFO L225 Difference]: With dead ends: 9346 [2021-12-17 15:50:24,987 INFO L226 Difference]: Without dead ends: 9344 [2021-12-17 15:50:24,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:50:24,990 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 279 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:24,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 563 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2021-12-17 15:50:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 4816. [2021-12-17 15:50:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 4815 states have (on average 1.44527518172378) internal successors, (6959), 4815 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 6959 transitions. [2021-12-17 15:50:25,184 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 6959 transitions. Word has length 57 [2021-12-17 15:50:25,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:25,185 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 6959 transitions. [2021-12-17 15:50:25,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:25,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 6959 transitions. [2021-12-17 15:50:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-17 15:50:25,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:25,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:25,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:50:25,186 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:25,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:25,186 INFO L85 PathProgramCache]: Analyzing trace with hash 654846656, now seen corresponding path program 1 times [2021-12-17 15:50:25,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:25,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024879229] [2021-12-17 15:50:25,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:25,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:25,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:25,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024879229] [2021-12-17 15:50:25,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024879229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:25,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:25,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:25,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61175340] [2021-12-17 15:50:25,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:25,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:25,213 INFO L87 Difference]: Start difference. First operand 4816 states and 6959 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:25,366 INFO L93 Difference]: Finished difference Result 11534 states and 16675 transitions. [2021-12-17 15:50:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:25,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-12-17 15:50:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:25,384 INFO L225 Difference]: With dead ends: 11534 [2021-12-17 15:50:25,385 INFO L226 Difference]: Without dead ends: 6748 [2021-12-17 15:50:25,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:25,390 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 65 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:25,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2021-12-17 15:50:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6746. [2021-12-17 15:50:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6746 states, 6745 states have (on average 1.4364714603409934) internal successors, (9689), 6745 states have internal predecessors, (9689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 9689 transitions. [2021-12-17 15:50:25,621 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 9689 transitions. Word has length 58 [2021-12-17 15:50:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:25,621 INFO L470 AbstractCegarLoop]: Abstraction has 6746 states and 9689 transitions. [2021-12-17 15:50:25,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 9689 transitions. [2021-12-17 15:50:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-17 15:50:25,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:25,625 INFO L514 BasicCegarLoop]: 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] [2021-12-17 15:50:25,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 15:50:25,626 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:25,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2133316492, now seen corresponding path program 1 times [2021-12-17 15:50:25,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:25,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035860858] [2021-12-17 15:50:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:25,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 15:50:25,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:25,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035860858] [2021-12-17 15:50:25,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035860858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:50:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957229521] [2021-12-17 15:50:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:25,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:50:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:50:25,716 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) [2021-12-17 15:50:25,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 15:50:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:25,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-17 15:50:25,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:50:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 15:50:26,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 15:50:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 15:50:26,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957229521] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 15:50:26,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 15:50:26,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2021-12-17 15:50:26,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215351427] [2021-12-17 15:50:26,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 15:50:26,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 15:50:26,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 15:50:26,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:50:26,371 INFO L87 Difference]: Start difference. First operand 6746 states and 9689 transitions. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:26,913 INFO L93 Difference]: Finished difference Result 25469 states and 36924 transitions. [2021-12-17 15:50:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 15:50:26,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 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 81 [2021-12-17 15:50:26,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:26,947 INFO L225 Difference]: With dead ends: 25469 [2021-12-17 15:50:26,948 INFO L226 Difference]: Without dead ends: 20683 [2021-12-17 15:50:26,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:50:26,957 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 704 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:26,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1128 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20683 states. [2021-12-17 15:50:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20683 to 19914. [2021-12-17 15:50:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19914 states, 19913 states have (on average 1.4306734294179682) internal successors, (28489), 19913 states have internal predecessors, (28489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19914 states to 19914 states and 28489 transitions. [2021-12-17 15:50:27,652 INFO L78 Accepts]: Start accepts. Automaton has 19914 states and 28489 transitions. Word has length 81 [2021-12-17 15:50:27,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:27,652 INFO L470 AbstractCegarLoop]: Abstraction has 19914 states and 28489 transitions. [2021-12-17 15:50:27,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 19914 states and 28489 transitions. [2021-12-17 15:50:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 15:50:27,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:27,656 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:27,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 15:50:27,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 15:50:27,866 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:27,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash -963170832, now seen corresponding path program 1 times [2021-12-17 15:50:27,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:27,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602953201] [2021-12-17 15:50:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:27,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 15:50:27,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:27,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602953201] [2021-12-17 15:50:27,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602953201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:27,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:27,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:50:27,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181062082] [2021-12-17 15:50:27,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:27,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:50:27,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:27,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:50:27,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:50:27,909 INFO L87 Difference]: Start difference. First operand 19914 states and 28489 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:28,546 INFO L93 Difference]: Finished difference Result 42820 states and 61622 transitions. [2021-12-17 15:50:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:50:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 82 [2021-12-17 15:50:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:28,655 INFO L225 Difference]: With dead ends: 42820 [2021-12-17 15:50:28,655 INFO L226 Difference]: Without dead ends: 34790 [2021-12-17 15:50:28,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:50:28,667 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 564 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:28,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 813 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34790 states. [2021-12-17 15:50:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34790 to 27130. [2021-12-17 15:50:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27130 states, 27129 states have (on average 1.4283239337977809) internal successors, (38749), 27129 states have internal predecessors, (38749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27130 states to 27130 states and 38749 transitions. [2021-12-17 15:50:29,496 INFO L78 Accepts]: Start accepts. Automaton has 27130 states and 38749 transitions. Word has length 82 [2021-12-17 15:50:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:29,496 INFO L470 AbstractCegarLoop]: Abstraction has 27130 states and 38749 transitions. [2021-12-17 15:50:29,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 27130 states and 38749 transitions. [2021-12-17 15:50:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 15:50:29,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:29,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:29,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 15:50:29,502 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1851338368, now seen corresponding path program 1 times [2021-12-17 15:50:29,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:29,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025637513] [2021-12-17 15:50:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:29,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:29,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025637513] [2021-12-17 15:50:29,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025637513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:29,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:29,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:29,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702139324] [2021-12-17 15:50:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:29,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:29,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:29,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:29,530 INFO L87 Difference]: Start difference. First operand 27130 states and 38749 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:30,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:30,373 INFO L93 Difference]: Finished difference Result 54274 states and 77468 transitions. [2021-12-17 15:50:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-17 15:50:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:30,424 INFO L225 Difference]: With dead ends: 54274 [2021-12-17 15:50:30,424 INFO L226 Difference]: Without dead ends: 38552 [2021-12-17 15:50:30,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:30,444 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 65 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:30,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 270 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38552 states. [2021-12-17 15:50:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38552 to 35670. [2021-12-17 15:50:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35670 states, 35669 states have (on average 1.4103563318287589) internal successors, (50306), 35669 states have internal predecessors, (50306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35670 states to 35670 states and 50306 transitions. [2021-12-17 15:50:31,402 INFO L78 Accepts]: Start accepts. Automaton has 35670 states and 50306 transitions. Word has length 82 [2021-12-17 15:50:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:31,403 INFO L470 AbstractCegarLoop]: Abstraction has 35670 states and 50306 transitions. [2021-12-17 15:50:31,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 35670 states and 50306 transitions. [2021-12-17 15:50:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 15:50:31,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:31,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:31,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 15:50:31,408 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2016282864, now seen corresponding path program 1 times [2021-12-17 15:50:31,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:31,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783083899] [2021-12-17 15:50:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:31,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:31,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:31,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783083899] [2021-12-17 15:50:31,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783083899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:31,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:31,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:31,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074514513] [2021-12-17 15:50:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:31,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:31,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:31,433 INFO L87 Difference]: Start difference. First operand 35670 states and 50306 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:32,254 INFO L93 Difference]: Finished difference Result 56791 states and 79640 transitions. [2021-12-17 15:50:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-17 15:50:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:32,307 INFO L225 Difference]: With dead ends: 56791 [2021-12-17 15:50:32,307 INFO L226 Difference]: Without dead ends: 36945 [2021-12-17 15:50:32,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:32,331 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 66 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:32,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 283 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36945 states. [2021-12-17 15:50:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36945 to 35345. [2021-12-17 15:50:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35345 states, 35344 states have (on average 1.3806869624264373) internal successors, (48799), 35344 states have internal predecessors, (48799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35345 states to 35345 states and 48799 transitions. [2021-12-17 15:50:33,440 INFO L78 Accepts]: Start accepts. Automaton has 35345 states and 48799 transitions. Word has length 82 [2021-12-17 15:50:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:33,441 INFO L470 AbstractCegarLoop]: Abstraction has 35345 states and 48799 transitions. [2021-12-17 15:50:33,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 35345 states and 48799 transitions. [2021-12-17 15:50:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 15:50:33,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:33,446 INFO L514 BasicCegarLoop]: 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] [2021-12-17 15:50:33,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 15:50:33,446 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash 990402630, now seen corresponding path program 1 times [2021-12-17 15:50:33,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:33,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703724927] [2021-12-17 15:50:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:33,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:33,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:33,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703724927] [2021-12-17 15:50:33,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703724927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:33,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:33,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:33,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8440321] [2021-12-17 15:50:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:33,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:33,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:33,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:33,471 INFO L87 Difference]: Start difference. First operand 35345 states and 48799 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:35,096 INFO L93 Difference]: Finished difference Result 94968 states and 130813 transitions. [2021-12-17 15:50:35,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-17 15:50:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:35,183 INFO L225 Difference]: With dead ends: 94968 [2021-12-17 15:50:35,183 INFO L226 Difference]: Without dead ends: 64129 [2021-12-17 15:50:35,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:35,208 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 63 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:35,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 254 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64129 states. [2021-12-17 15:50:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64129 to 64011. [2021-12-17 15:50:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64011 states, 64010 states have (on average 1.3604124355569442) internal successors, (87080), 64010 states have internal predecessors, (87080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64011 states to 64011 states and 87080 transitions. [2021-12-17 15:50:36,987 INFO L78 Accepts]: Start accepts. Automaton has 64011 states and 87080 transitions. Word has length 82 [2021-12-17 15:50:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:36,987 INFO L470 AbstractCegarLoop]: Abstraction has 64011 states and 87080 transitions. [2021-12-17 15:50:36,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 64011 states and 87080 transitions. [2021-12-17 15:50:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 15:50:36,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:36,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:36,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 15:50:36,995 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash -634913072, now seen corresponding path program 1 times [2021-12-17 15:50:36,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:36,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481192916] [2021-12-17 15:50:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:36,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-17 15:50:37,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:37,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481192916] [2021-12-17 15:50:37,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481192916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:37,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:37,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:50:37,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937407795] [2021-12-17 15:50:37,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:37,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:50:37,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:50:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:50:37,036 INFO L87 Difference]: Start difference. First operand 64011 states and 87080 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:39,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:39,189 INFO L93 Difference]: Finished difference Result 113360 states and 155898 transitions. [2021-12-17 15:50:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:50:39,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 82 [2021-12-17 15:50:39,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:39,327 INFO L225 Difference]: With dead ends: 113360 [2021-12-17 15:50:39,327 INFO L226 Difference]: Without dead ends: 102870 [2021-12-17 15:50:39,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:50:39,351 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 605 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:39,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 756 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:39,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102870 states. [2021-12-17 15:50:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102870 to 73827. [2021-12-17 15:50:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73827 states, 73826 states have (on average 1.3617966570043074) internal successors, (100536), 73826 states have internal predecessors, (100536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73827 states to 73827 states and 100536 transitions. [2021-12-17 15:50:41,921 INFO L78 Accepts]: Start accepts. Automaton has 73827 states and 100536 transitions. Word has length 82 [2021-12-17 15:50:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:41,921 INFO L470 AbstractCegarLoop]: Abstraction has 73827 states and 100536 transitions. [2021-12-17 15:50:41,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 73827 states and 100536 transitions. [2021-12-17 15:50:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 15:50:41,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:41,928 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:41,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 15:50:41,928 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:41,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:41,929 INFO L85 PathProgramCache]: Analyzing trace with hash 620499738, now seen corresponding path program 1 times [2021-12-17 15:50:41,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:41,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603291696] [2021-12-17 15:50:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:41,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 15:50:41,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:41,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603291696] [2021-12-17 15:50:41,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603291696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:41,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:41,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:50:41,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285648190] [2021-12-17 15:50:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:41,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:50:41,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:50:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:50:41,967 INFO L87 Difference]: Start difference. First operand 73827 states and 100536 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:44,436 INFO L93 Difference]: Finished difference Result 128075 states and 176186 transitions. [2021-12-17 15:50:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:50:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-17 15:50:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:44,596 INFO L225 Difference]: With dead ends: 128075 [2021-12-17 15:50:44,596 INFO L226 Difference]: Without dead ends: 112339 [2021-12-17 15:50:44,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:50:44,633 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 572 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:44,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 811 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112339 states. [2021-12-17 15:50:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112339 to 88515. [2021-12-17 15:50:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88515 states, 88514 states have (on average 1.3624059470818175) internal successors, (120592), 88514 states have internal predecessors, (120592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88515 states to 88515 states and 120592 transitions. [2021-12-17 15:50:47,676 INFO L78 Accepts]: Start accepts. Automaton has 88515 states and 120592 transitions. Word has length 82 [2021-12-17 15:50:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:47,676 INFO L470 AbstractCegarLoop]: Abstraction has 88515 states and 120592 transitions. [2021-12-17 15:50:47,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 88515 states and 120592 transitions. [2021-12-17 15:50:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-17 15:50:47,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:47,696 INFO L514 BasicCegarLoop]: 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] [2021-12-17 15:50:47,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 15:50:47,696 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1892417630, now seen corresponding path program 1 times [2021-12-17 15:50:47,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:47,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329091341] [2021-12-17 15:50:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:47,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 15:50:47,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:47,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329091341] [2021-12-17 15:50:47,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329091341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:47,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:47,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:50:47,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314305681] [2021-12-17 15:50:47,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:47,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:50:47,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:50:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:50:47,740 INFO L87 Difference]: Start difference. First operand 88515 states and 120592 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:50,799 INFO L93 Difference]: Finished difference Result 148070 states and 203133 transitions. [2021-12-17 15:50:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:50:50,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 83 [2021-12-17 15:50:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:50,991 INFO L225 Difference]: With dead ends: 148070 [2021-12-17 15:50:50,992 INFO L226 Difference]: Without dead ends: 128845 [2021-12-17 15:50:51,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:50:51,029 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 619 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:51,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 857 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:50:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128845 states. [2021-12-17 15:50:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128845 to 103030. [2021-12-17 15:50:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103030 states, 103029 states have (on average 1.3602869095109145) internal successors, (140149), 103029 states have internal predecessors, (140149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103030 states to 103030 states and 140149 transitions. [2021-12-17 15:50:54,702 INFO L78 Accepts]: Start accepts. Automaton has 103030 states and 140149 transitions. Word has length 83 [2021-12-17 15:50:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:50:54,702 INFO L470 AbstractCegarLoop]: Abstraction has 103030 states and 140149 transitions. [2021-12-17 15:50:54,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 103030 states and 140149 transitions. [2021-12-17 15:50:54,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-17 15:50:54,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:50:54,710 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:50:54,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 15:50:54,710 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:50:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:50:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1564512682, now seen corresponding path program 1 times [2021-12-17 15:50:54,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:50:54,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534339156] [2021-12-17 15:50:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:50:54,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:50:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:50:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:50:54,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:50:54,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534339156] [2021-12-17 15:50:54,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534339156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:50:54,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:50:54,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:50:54,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758433064] [2021-12-17 15:50:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:50:54,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:50:54,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:50:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:50:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:54,743 INFO L87 Difference]: Start difference. First operand 103030 states and 140149 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 15:50:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:50:59,429 INFO L93 Difference]: Finished difference Result 275338 states and 372504 transitions. [2021-12-17 15:50:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:50:59,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-12-17 15:50:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:50:59,692 INFO L225 Difference]: With dead ends: 275338 [2021-12-17 15:50:59,692 INFO L226 Difference]: Without dead ends: 175342 [2021-12-17 15:50:59,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:50:59,927 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 63 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:50:59,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 295 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:51:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175342 states.