./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label07.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/eca-rers2012/Problem12_label07.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 bcaadc0834b1e1668dc1393f3526c5eee7053e110c3b9c83c6fc0a5a0bac3de4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 22:39:56,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 22:39:56,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 22:39:56,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 22:39:56,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 22:39:56,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 22:39:56,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 22:39:56,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 22:39:56,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 22:39:56,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 22:39:56,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 22:39:56,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 22:39:56,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 22:39:56,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 22:39:56,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 22:39:56,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 22:39:56,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 22:39:56,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 22:39:56,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 22:39:56,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 22:39:56,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 22:39:56,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 22:39:56,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 22:39:56,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 22:39:56,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 22:39:56,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 22:39:56,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 22:39:56,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 22:39:56,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 22:39:56,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 22:39:56,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 22:39:56,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 22:39:56,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 22:39:56,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 22:39:56,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 22:39:56,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 22:39:56,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 22:39:56,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 22:39:56,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 22:39:56,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 22:39:56,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 22:39:56,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 22:39:56,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 22:39:56,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 22:39:56,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 22:39:56,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 22:39:56,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 22:39:56,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 22:39:56,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 22:39:56,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 22:39:56,609 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 22:39:56,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 22:39:56,610 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 22:39:56,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 22:39:56,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 22:39:56,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 22:39:56,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 22:39:56,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 22:39:56,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 22:39:56,611 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 22:39:56,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 22:39:56,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 22:39:56,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 22:39:56,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 22:39:56,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 22:39:56,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 22:39:56,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 22:39:56,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 22:39:56,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 22:39:56,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 22:39:56,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 22:39:56,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 22:39:56,615 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 22:39:56,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 22:39:56,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 22:39:56,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 22:39:56,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcaadc0834b1e1668dc1393f3526c5eee7053e110c3b9c83c6fc0a5a0bac3de4 [2021-12-15 22:39:56,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 22:39:56,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 22:39:56,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 22:39:56,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 22:39:56,856 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 22:39:56,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label07.c [2021-12-15 22:39:56,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11bcb38c4/91b098d88022475c9997cd6d21c404bb/FLAGede600fe8 [2021-12-15 22:39:57,614 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 22:39:57,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label07.c [2021-12-15 22:39:57,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11bcb38c4/91b098d88022475c9997cd6d21c404bb/FLAGede600fe8 [2021-12-15 22:39:57,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11bcb38c4/91b098d88022475c9997cd6d21c404bb [2021-12-15 22:39:57,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 22:39:57,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 22:39:57,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 22:39:57,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 22:39:57,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 22:39:57,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:39:57" (1/1) ... [2021-12-15 22:39:57,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba95f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:57, skipping insertion in model container [2021-12-15 22:39:57,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:39:57" (1/1) ... [2021-12-15 22:39:57,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 22:39:58,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 22:39:58,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label07.c[1203,1216] [2021-12-15 22:39:58,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 22:39:58,942 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 22:39:58,956 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label07.c[1203,1216] [2021-12-15 22:39:59,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 22:39:59,372 INFO L208 MainTranslator]: Completed translation [2021-12-15 22:39:59,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59 WrapperNode [2021-12-15 22:39:59,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 22:39:59,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 22:39:59,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 22:39:59,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 22:39:59,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:39:59,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:39:59,786 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-12-15 22:39:59,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 22:39:59,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 22:39:59,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 22:39:59,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 22:39:59,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:39:59,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:39:59,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:39:59,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:40:00,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:40:00,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:40:00,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:40:00,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 22:40:00,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 22:40:00,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 22:40:00,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 22:40:00,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (1/1) ... [2021-12-15 22:40:00,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 22:40:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 22:40:00,232 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) [2021-12-15 22:40:00,245 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 [2021-12-15 22:40:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 22:40:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 22:40:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 22:40:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 22:40:00,348 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 22:40:00,349 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 22:40:03,531 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 22:40:03,545 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 22:40:03,546 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 22:40:03,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:40:03 BoogieIcfgContainer [2021-12-15 22:40:03,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 22:40:03,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 22:40:03,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 22:40:03,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 22:40:03,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:39:57" (1/3) ... [2021-12-15 22:40:03,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd4ace3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:40:03, skipping insertion in model container [2021-12-15 22:40:03,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:39:59" (2/3) ... [2021-12-15 22:40:03,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd4ace3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:40:03, skipping insertion in model container [2021-12-15 22:40:03,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:40:03" (3/3) ... [2021-12-15 22:40:03,589 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label07.c [2021-12-15 22:40:03,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 22:40:03,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 22:40:03,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 22:40:03,659 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 [2021-12-15 22:40:03,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 22:40:03,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 22:40:03,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:03,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 22:40:03,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash 889694410, now seen corresponding path program 1 times [2021-12-15 22:40:03,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:03,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770508289] [2021-12-15 22:40:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:03,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 22:40:03,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:03,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770508289] [2021-12-15 22:40:03,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770508289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:03,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:03,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 22:40:03,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506225486] [2021-12-15 22:40:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:03,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:03,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:03,874 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:07,412 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2021-12-15 22:40:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:07,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-15 22:40:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:07,433 INFO L225 Difference]: With dead ends: 2388 [2021-12-15 22:40:07,433 INFO L226 Difference]: Without dead ends: 1506 [2021-12-15 22:40:07,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:07,442 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 853 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:07,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-15 22:40:07,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-12-15 22:40:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-12-15 22:40:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2021-12-15 22:40:07,533 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 6 [2021-12-15 22:40:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:07,534 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2021-12-15 22:40:07,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2021-12-15 22:40:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-15 22:40:07,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:07,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:07,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 22:40:07,537 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1985672844, now seen corresponding path program 1 times [2021-12-15 22:40:07,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:07,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737115104] [2021-12-15 22:40:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:07,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 22:40:07,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:07,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737115104] [2021-12-15 22:40:07,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737115104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:07,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:07,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 22:40:07,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527666783] [2021-12-15 22:40:07,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:07,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:07,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:07,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:07,683 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:10,796 INFO L93 Difference]: Finished difference Result 4512 states and 8437 transitions. [2021-12-15 22:40:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:10,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-15 22:40:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:10,809 INFO L225 Difference]: With dead ends: 4512 [2021-12-15 22:40:10,810 INFO L226 Difference]: Without dead ends: 3008 [2021-12-15 22:40:10,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:10,813 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:10,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 494 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-15 22:40:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-12-15 22:40:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-12-15 22:40:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.5809777186564682) internal successors, (4754), 3007 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4754 transitions. [2021-12-15 22:40:10,874 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4754 transitions. Word has length 79 [2021-12-15 22:40:10,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:10,876 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4754 transitions. [2021-12-15 22:40:10,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4754 transitions. [2021-12-15 22:40:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-15 22:40:10,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:10,883 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:10,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 22:40:10,885 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:10,890 INFO L85 PathProgramCache]: Analyzing trace with hash -78266449, now seen corresponding path program 1 times [2021-12-15 22:40:10,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:10,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505354994] [2021-12-15 22:40:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:10,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 22:40:11,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:11,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505354994] [2021-12-15 22:40:11,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505354994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:11,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:11,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:11,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352159933] [2021-12-15 22:40:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:11,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 22:40:11,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 22:40:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 22:40:11,078 INFO L87 Difference]: Start difference. First operand 3008 states and 4754 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:13,814 INFO L93 Difference]: Finished difference Result 6781 states and 10483 transitions. [2021-12-15 22:40:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 22:40:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 [2021-12-15 22:40:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:13,866 INFO L225 Difference]: With dead ends: 6781 [2021-12-15 22:40:13,866 INFO L226 Difference]: Without dead ends: 3775 [2021-12-15 22:40:13,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 22:40:13,870 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1361 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:13,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1361 Valid, 1645 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-15 22:40:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-12-15 22:40:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3759. [2021-12-15 22:40:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.4664715274081959) internal successors, (5511), 3758 states have internal predecessors, (5511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5511 transitions. [2021-12-15 22:40:13,943 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5511 transitions. Word has length 81 [2021-12-15 22:40:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:13,946 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 5511 transitions. [2021-12-15 22:40:13,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5511 transitions. [2021-12-15 22:40:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-15 22:40:13,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:13,954 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:13,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 22:40:13,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash -257547958, now seen corresponding path program 1 times [2021-12-15 22:40:13,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:13,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810404878] [2021-12-15 22:40:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:13,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 22:40:14,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:14,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810404878] [2021-12-15 22:40:14,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810404878] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 22:40:14,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171211923] [2021-12-15 22:40:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:14,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 22:40:14,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 22:40:14,164 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) [2021-12-15 22:40:14,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 22:40:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:14,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 22:40:14,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 22:40:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 22:40:14,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 22:40:14,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171211923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:14,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 22:40:14,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-12-15 22:40:14,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858050298] [2021-12-15 22:40:14,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:14,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:14,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 22:40:14,596 INFO L87 Difference]: Start difference. First operand 3759 states and 5511 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:17,596 INFO L93 Difference]: Finished difference Result 9769 states and 15014 transitions. [2021-12-15 22:40:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 147 [2021-12-15 22:40:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:17,627 INFO L225 Difference]: With dead ends: 9769 [2021-12-15 22:40:17,628 INFO L226 Difference]: Without dead ends: 6763 [2021-12-15 22:40:17,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 22:40:17,638 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 700 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:17,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 283 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-15 22:40:17,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-12-15 22:40:17,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2021-12-15 22:40:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.479296066252588) internal successors, (10003), 6762 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 10003 transitions. [2021-12-15 22:40:17,780 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 10003 transitions. Word has length 147 [2021-12-15 22:40:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:17,782 INFO L470 AbstractCegarLoop]: Abstraction has 6763 states and 10003 transitions. [2021-12-15 22:40:17,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 10003 transitions. [2021-12-15 22:40:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-15 22:40:17,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:17,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:17,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 22:40:17,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 22:40:18,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:18,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:18,000 INFO L85 PathProgramCache]: Analyzing trace with hash -75370533, now seen corresponding path program 1 times [2021-12-15 22:40:18,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:18,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792917343] [2021-12-15 22:40:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:18,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 22:40:18,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:18,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792917343] [2021-12-15 22:40:18,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792917343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:18,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:18,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:18,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506629935] [2021-12-15 22:40:18,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:18,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 22:40:18,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 22:40:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 22:40:18,132 INFO L87 Difference]: Start difference. First operand 6763 states and 10003 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 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) [2021-12-15 22:40:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:21,109 INFO L93 Difference]: Finished difference Result 15063 states and 22131 transitions. [2021-12-15 22:40:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 22:40:21,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 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) Word has length 154 [2021-12-15 22:40:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:21,158 INFO L225 Difference]: With dead ends: 15063 [2021-12-15 22:40:21,158 INFO L226 Difference]: Without dead ends: 9016 [2021-12-15 22:40:21,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 22:40:21,170 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 4011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:21,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 712 Invalid, 4011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-15 22:40:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2021-12-15 22:40:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 8265. [2021-12-15 22:40:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 1.3902468538238142) internal successors, (11489), 8264 states have internal predecessors, (11489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 11489 transitions. [2021-12-15 22:40:21,329 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 11489 transitions. Word has length 154 [2021-12-15 22:40:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:21,329 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 11489 transitions. [2021-12-15 22:40:21,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 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) [2021-12-15 22:40:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 11489 transitions. [2021-12-15 22:40:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-15 22:40:21,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:21,333 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:21,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 22:40:21,333 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:21,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1982992022, now seen corresponding path program 1 times [2021-12-15 22:40:21,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:21,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048369483] [2021-12-15 22:40:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:21,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 22:40:21,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:21,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048369483] [2021-12-15 22:40:21,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048369483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:21,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:21,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:21,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286326309] [2021-12-15 22:40:21,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:21,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:21,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:21,489 INFO L87 Difference]: Start difference. First operand 8265 states and 11489 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:23,995 INFO L93 Difference]: Finished difference Result 15777 states and 22220 transitions. [2021-12-15 22:40:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:23,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2021-12-15 22:40:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:24,016 INFO L225 Difference]: With dead ends: 15777 [2021-12-15 22:40:24,016 INFO L226 Difference]: Without dead ends: 8265 [2021-12-15 22:40:24,025 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 [2021-12-15 22:40:24,026 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 691 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:24,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 1029 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-15 22:40:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2021-12-15 22:40:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 8265. [2021-12-15 22:40:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 1.3309535333978704) internal successors, (10999), 8264 states have internal predecessors, (10999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 10999 transitions. [2021-12-15 22:40:24,139 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 10999 transitions. Word has length 224 [2021-12-15 22:40:24,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:24,139 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 10999 transitions. [2021-12-15 22:40:24,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 10999 transitions. [2021-12-15 22:40:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-15 22:40:24,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:24,154 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:24,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 22:40:24,155 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1303794144, now seen corresponding path program 1 times [2021-12-15 22:40:24,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:24,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257420410] [2021-12-15 22:40:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:24,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-15 22:40:24,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:24,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257420410] [2021-12-15 22:40:24,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257420410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:24,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:24,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 22:40:24,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867345604] [2021-12-15 22:40:24,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:24,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:24,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:24,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:24,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:24,279 INFO L87 Difference]: Start difference. First operand 8265 states and 10999 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:26,962 INFO L93 Difference]: Finished difference Result 21787 states and 29836 transitions. [2021-12-15 22:40:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:26,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 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 228 [2021-12-15 22:40:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:26,990 INFO L225 Difference]: With dead ends: 21787 [2021-12-15 22:40:26,990 INFO L226 Difference]: Without dead ends: 14275 [2021-12-15 22:40:27,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:27,001 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:27,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-15 22:40:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2021-12-15 22:40:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 12020. [2021-12-15 22:40:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.3100091521757218) internal successors, (15745), 12019 states have internal predecessors, (15745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 15745 transitions. [2021-12-15 22:40:27,187 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 15745 transitions. Word has length 228 [2021-12-15 22:40:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:27,187 INFO L470 AbstractCegarLoop]: Abstraction has 12020 states and 15745 transitions. [2021-12-15 22:40:27,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 15745 transitions. [2021-12-15 22:40:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-12-15 22:40:27,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:27,198 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:27,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 22:40:27,199 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:27,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1645467978, now seen corresponding path program 1 times [2021-12-15 22:40:27,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:27,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566904225] [2021-12-15 22:40:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:27,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-15 22:40:27,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:27,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566904225] [2021-12-15 22:40:27,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566904225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:27,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:27,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 22:40:27,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064588433] [2021-12-15 22:40:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:27,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:27,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:27,314 INFO L87 Difference]: Start difference. First operand 12020 states and 15745 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:29,740 INFO L93 Difference]: Finished difference Result 30797 states and 40324 transitions. [2021-12-15 22:40:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:29,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 293 [2021-12-15 22:40:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:29,776 INFO L225 Difference]: With dead ends: 30797 [2021-12-15 22:40:29,776 INFO L226 Difference]: Without dead ends: 19530 [2021-12-15 22:40:29,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:29,786 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:29,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 22:40:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2021-12-15 22:40:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 18028. [2021-12-15 22:40:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 1.1678038497808843) internal successors, (21052), 18027 states have internal predecessors, (21052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 21052 transitions. [2021-12-15 22:40:30,028 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 21052 transitions. Word has length 293 [2021-12-15 22:40:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:30,029 INFO L470 AbstractCegarLoop]: Abstraction has 18028 states and 21052 transitions. [2021-12-15 22:40:30,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 21052 transitions. [2021-12-15 22:40:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-12-15 22:40:30,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:30,037 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:30,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 22:40:30,038 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash 45667212, now seen corresponding path program 1 times [2021-12-15 22:40:30,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:30,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091061108] [2021-12-15 22:40:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:30,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-15 22:40:30,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:30,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091061108] [2021-12-15 22:40:30,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091061108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:30,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:30,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:30,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007152517] [2021-12-15 22:40:30,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:30,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:30,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:30,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:30,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:30,175 INFO L87 Difference]: Start difference. First operand 18028 states and 21052 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:32,621 INFO L93 Difference]: Finished difference Result 42813 states and 50938 transitions. [2021-12-15 22:40:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:32,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 382 [2021-12-15 22:40:32,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:32,663 INFO L225 Difference]: With dead ends: 42813 [2021-12-15 22:40:32,663 INFO L226 Difference]: Without dead ends: 25538 [2021-12-15 22:40:32,676 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 [2021-12-15 22:40:32,677 INFO L933 BasicCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:32,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 22:40:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2021-12-15 22:40:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 25538. [2021-12-15 22:40:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.1436347260837216) internal successors, (29205), 25537 states have internal predecessors, (29205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 29205 transitions. [2021-12-15 22:40:33,030 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 29205 transitions. Word has length 382 [2021-12-15 22:40:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:33,031 INFO L470 AbstractCegarLoop]: Abstraction has 25538 states and 29205 transitions. [2021-12-15 22:40:33,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 29205 transitions. [2021-12-15 22:40:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-12-15 22:40:33,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:33,037 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 22:40:33,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 22:40:33,038 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash 352606786, now seen corresponding path program 1 times [2021-12-15 22:40:33,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:33,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489131608] [2021-12-15 22:40:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:33,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-15 22:40:33,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489131608] [2021-12-15 22:40:33,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489131608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:33,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:33,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:33,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559657168] [2021-12-15 22:40:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:33,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:33,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:33,165 INFO L87 Difference]: Start difference. First operand 25538 states and 29205 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:36,043 INFO L93 Difference]: Finished difference Result 61588 states and 71503 transitions. [2021-12-15 22:40:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:36,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 392 [2021-12-15 22:40:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:36,091 INFO L225 Difference]: With dead ends: 61588 [2021-12-15 22:40:36,091 INFO L226 Difference]: Without dead ends: 36803 [2021-12-15 22:40:36,106 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 [2021-12-15 22:40:36,107 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 695 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:36,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 578 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 22:40:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2021-12-15 22:40:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 36052. [2021-12-15 22:40:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 36051 states have (on average 1.1441846273334997) internal successors, (41249), 36051 states have internal predecessors, (41249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 41249 transitions. [2021-12-15 22:40:36,579 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 41249 transitions. Word has length 392 [2021-12-15 22:40:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:36,580 INFO L470 AbstractCegarLoop]: Abstraction has 36052 states and 41249 transitions. [2021-12-15 22:40:36,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 41249 transitions. [2021-12-15 22:40:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-12-15 22:40:36,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:36,594 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:36,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 22:40:36,594 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1089866455, now seen corresponding path program 1 times [2021-12-15 22:40:36,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:36,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034631400] [2021-12-15 22:40:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:36,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-15 22:40:36,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034631400] [2021-12-15 22:40:36,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034631400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:36,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:36,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:36,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841726128] [2021-12-15 22:40:36,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:36,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:36,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:36,769 INFO L87 Difference]: Start difference. First operand 36052 states and 41249 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:39,693 INFO L93 Difference]: Finished difference Result 102893 states and 118242 transitions. [2021-12-15 22:40:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:39,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 491 [2021-12-15 22:40:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:39,787 INFO L225 Difference]: With dead ends: 102893 [2021-12-15 22:40:39,787 INFO L226 Difference]: Without dead ends: 67594 [2021-12-15 22:40:39,819 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 [2021-12-15 22:40:39,820 INFO L933 BasicCegarLoop]: 1276 mSDtfsCounter, 560 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:39,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 1283 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 22:40:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2021-12-15 22:40:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 65341. [2021-12-15 22:40:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65341 states, 65340 states have (on average 1.1090449954086317) internal successors, (72465), 65340 states have internal predecessors, (72465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65341 states to 65341 states and 72465 transitions. [2021-12-15 22:40:40,736 INFO L78 Accepts]: Start accepts. Automaton has 65341 states and 72465 transitions. Word has length 491 [2021-12-15 22:40:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:40,737 INFO L470 AbstractCegarLoop]: Abstraction has 65341 states and 72465 transitions. [2021-12-15 22:40:40,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 65341 states and 72465 transitions. [2021-12-15 22:40:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-12-15 22:40:40,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:40,755 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:40,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 22:40:40,756 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:40,756 INFO L85 PathProgramCache]: Analyzing trace with hash -23459143, now seen corresponding path program 1 times [2021-12-15 22:40:40,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:40,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464854457] [2021-12-15 22:40:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:40,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-15 22:40:41,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:41,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464854457] [2021-12-15 22:40:41,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464854457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:41,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:41,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:41,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573047879] [2021-12-15 22:40:41,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:41,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:41,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:41,150 INFO L87 Difference]: Start difference. First operand 65341 states and 72465 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:43,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:43,932 INFO L93 Difference]: Finished difference Result 149455 states and 165822 transitions. [2021-12-15 22:40:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:43,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2021-12-15 22:40:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:44,044 INFO L225 Difference]: With dead ends: 149455 [2021-12-15 22:40:44,044 INFO L226 Difference]: Without dead ends: 84867 [2021-12-15 22:40:44,079 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 [2021-12-15 22:40:44,080 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 868 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:44,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 1117 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 22:40:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84867 states. [2021-12-15 22:40:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84867 to 84867. [2021-12-15 22:40:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84867 states, 84866 states have (on average 1.0951028680508095) internal successors, (92937), 84866 states have internal predecessors, (92937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84867 states to 84867 states and 92937 transitions. [2021-12-15 22:40:45,275 INFO L78 Accepts]: Start accepts. Automaton has 84867 states and 92937 transitions. Word has length 492 [2021-12-15 22:40:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 22:40:45,276 INFO L470 AbstractCegarLoop]: Abstraction has 84867 states and 92937 transitions. [2021-12-15 22:40:45,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 84867 states and 92937 transitions. [2021-12-15 22:40:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-12-15 22:40:45,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 22:40:45,328 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 22:40:45,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 22:40:45,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 22:40:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 22:40:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1906117843, now seen corresponding path program 1 times [2021-12-15 22:40:45,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 22:40:45,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576209476] [2021-12-15 22:40:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 22:40:45,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 22:40:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 22:40:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-12-15 22:40:45,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 22:40:45,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576209476] [2021-12-15 22:40:45,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576209476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 22:40:45,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 22:40:45,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 22:40:45,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320708355] [2021-12-15 22:40:45,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 22:40:45,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 22:40:45,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 22:40:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 22:40:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 22:40:45,545 INFO L87 Difference]: Start difference. First operand 84867 states and 92937 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 22:40:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 22:40:48,833 INFO L93 Difference]: Finished difference Result 202776 states and 223778 transitions. [2021-12-15 22:40:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 22:40:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 548 [2021-12-15 22:40:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 22:40:49,090 INFO L225 Difference]: With dead ends: 202776 [2021-12-15 22:40:49,090 INFO L226 Difference]: Without dead ends: 114156 [2021-12-15 22:40:49,121 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 [2021-12-15 22:40:49,129 INFO L933 BasicCegarLoop]: 1277 mSDtfsCounter, 589 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 22:40:49,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1285 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 22:40:49,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114156 states.