./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/Problem18_label22.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 8328e3b00fffe34fe4036e6200cb72104f847b0ee3df41fd01aea5e06a24af7e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:25:45,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:25:45,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:25:45,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:25:45,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:25:45,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:25:45,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:25:45,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:25:45,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:25:45,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:25:45,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:25:45,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:25:45,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:25:45,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:25:45,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:25:45,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:25:45,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:25:45,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:25:45,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:25:45,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:25:45,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:25:45,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:25:45,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:25:45,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:25:45,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:25:45,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:25:45,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:25:45,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:25:45,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:25:45,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:25:45,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:25:45,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:25:45,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:25:45,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:25:45,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:25:45,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:25:45,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:25:45,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:25:45,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:25:45,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:25:45,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:25:45,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:25:45,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:25:45,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:25:45,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:25:45,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:25:45,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:25:45,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:25:45,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:25:45,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:25:45,804 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:25:45,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:25:45,805 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:25:45,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:25:45,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:25:45,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:25:45,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:25:45,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:25:45,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:25:45,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:25:45,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:25:45,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:25:45,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:25:45,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:25:45,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:25:45,808 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:25:45,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:25:45,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:25:45,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:25:45,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8328e3b00fffe34fe4036e6200cb72104f847b0ee3df41fd01aea5e06a24af7e [2021-12-21 11:25:45,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:25:46,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:25:46,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:25:46,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:25:46,009 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:25:46,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label22.c [2021-12-21 11:25:46,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e220988e0/519a747e6875450cb4f18ddec717cf1c/FLAG048d8e666 [2021-12-21 11:25:46,635 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:25:46,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label22.c [2021-12-21 11:25:46,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e220988e0/519a747e6875450cb4f18ddec717cf1c/FLAG048d8e666 [2021-12-21 11:25:47,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e220988e0/519a747e6875450cb4f18ddec717cf1c [2021-12-21 11:25:47,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:25:47,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:25:47,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:25:47,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:25:47,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:25:47,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:25:47" (1/1) ... [2021-12-21 11:25:47,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b1a571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:47, skipping insertion in model container [2021-12-21 11:25:47,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:25:47" (1/1) ... [2021-12-21 11:25:47,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:25:47,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:25:47,427 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/Problem18_label22.c[4444,4457] [2021-12-21 11:25:47,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:25:47,929 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:25:47,951 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/Problem18_label22.c[4444,4457] [2021-12-21 11:25:48,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:25:48,234 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:25:48,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48 WrapperNode [2021-12-21 11:25:48,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:25:48,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:25:48,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:25:48,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:25:48,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,396 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2021-12-21 11:25:48,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:25:48,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:25:48,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:25:48,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:25:48,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:25:48,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:25:48,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:25:48,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:25:48,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (1/1) ... [2021-12-21 11:25:48,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:25:48,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:25:48,674 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) [2021-12-21 11:25:48,694 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 [2021-12-21 11:25:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:25:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:25:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:25:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:25:48,772 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:25:48,783 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:25:50,872 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:25:50,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:25:50,883 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 11:25:50,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:25:50 BoogieIcfgContainer [2021-12-21 11:25:50,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:25:50,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:25:50,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:25:50,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:25:50,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:25:47" (1/3) ... [2021-12-21 11:25:50,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eca37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:25:50, skipping insertion in model container [2021-12-21 11:25:50,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:48" (2/3) ... [2021-12-21 11:25:50,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eca37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:25:50, skipping insertion in model container [2021-12-21 11:25:50,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:25:50" (3/3) ... [2021-12-21 11:25:50,890 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label22.c [2021-12-21 11:25:50,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:25:50,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:25:50,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:25:50,952 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 [2021-12-21 11:25:50,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:25:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-21 11:25:50,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:50,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:25:50,988 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:50,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2021-12-21 11:25:51,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:51,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171582028] [2021-12-21 11:25:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:51,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:25:51,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:51,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171582028] [2021-12-21 11:25:51,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171582028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:51,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:51,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:25:51,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600110824] [2021-12-21 11:25:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:51,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:25:51,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:25:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:51,175 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:25:53,708 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2021-12-21 11:25:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:25:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-12-21 11:25:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:25:53,724 INFO L225 Difference]: With dead ends: 2205 [2021-12-21 11:25:53,725 INFO L226 Difference]: Without dead ends: 1384 [2021-12-21 11:25:53,729 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 [2021-12-21 11:25:53,731 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 707 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:25:53,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 291 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 11:25:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-12-21 11:25:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2021-12-21 11:25:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.7339117859725235) internal successors, (2398), 1383 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2398 transitions. [2021-12-21 11:25:53,794 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2398 transitions. Word has length 41 [2021-12-21 11:25:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:25:53,794 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2398 transitions. [2021-12-21 11:25:53,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2398 transitions. [2021-12-21 11:25:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-21 11:25:53,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:53,797 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-21 11:25:53,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:25:53,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:53,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:53,798 INFO L85 PathProgramCache]: Analyzing trace with hash -792607692, now seen corresponding path program 1 times [2021-12-21 11:25:53,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:53,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640195010] [2021-12-21 11:25:53,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:53,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:25:53,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:53,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640195010] [2021-12-21 11:25:53,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640195010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:53,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:53,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:25:53,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108970186] [2021-12-21 11:25:53,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:53,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:25:53,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:25:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:25:53,937 INFO L87 Difference]: Start difference. First operand 1384 states and 2398 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:57,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:25:57,477 INFO L93 Difference]: Finished difference Result 4842 states and 8275 transitions. [2021-12-21 11:25:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 11:25:57,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-12-21 11:25:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:25:57,489 INFO L225 Difference]: With dead ends: 4842 [2021-12-21 11:25:57,489 INFO L226 Difference]: Without dead ends: 3460 [2021-12-21 11:25:57,493 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 [2021-12-21 11:25:57,494 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 2033 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 1421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 4689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1421 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:25:57,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2033 Valid, 137 Invalid, 4689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1421 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 11:25:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-12-21 11:25:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3454. [2021-12-21 11:25:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3453 states have (on average 1.540689255719664) internal successors, (5320), 3453 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5320 transitions. [2021-12-21 11:25:57,548 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5320 transitions. Word has length 110 [2021-12-21 11:25:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:25:57,550 INFO L470 AbstractCegarLoop]: Abstraction has 3454 states and 5320 transitions. [2021-12-21 11:25:57,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5320 transitions. [2021-12-21 11:25:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-21 11:25:57,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:57,561 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:25:57,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 11:25:57,562 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:57,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1943937221, now seen corresponding path program 1 times [2021-12-21 11:25:57,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:57,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765572585] [2021-12-21 11:25:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:57,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 11:25:57,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:57,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765572585] [2021-12-21 11:25:57,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765572585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:57,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:57,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:25:57,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489117452] [2021-12-21 11:25:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:57,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:25:57,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:57,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:25:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:25:57,752 INFO L87 Difference]: Start difference. First operand 3454 states and 5320 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:01,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:01,204 INFO L93 Difference]: Finished difference Result 11048 states and 17162 transitions. [2021-12-21 11:26:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 11:26:01,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 219 [2021-12-21 11:26:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:01,228 INFO L225 Difference]: With dead ends: 11048 [2021-12-21 11:26:01,228 INFO L226 Difference]: Without dead ends: 7596 [2021-12-21 11:26:01,232 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 [2021-12-21 11:26:01,233 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 1924 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4380 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 5008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 4380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:01,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1924 Valid, 649 Invalid, 5008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 4380 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-21 11:26:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-12-21 11:26:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6904. [2021-12-21 11:26:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.3271041576126321) internal successors, (9161), 6903 states have internal predecessors, (9161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9161 transitions. [2021-12-21 11:26:01,328 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9161 transitions. Word has length 219 [2021-12-21 11:26:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:01,329 INFO L470 AbstractCegarLoop]: Abstraction has 6904 states and 9161 transitions. [2021-12-21 11:26:01,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9161 transitions. [2021-12-21 11:26:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-21 11:26:01,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:01,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:01,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 11:26:01,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash -214138844, now seen corresponding path program 1 times [2021-12-21 11:26:01,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:01,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014352673] [2021-12-21 11:26:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:01,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:26:01,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014352673] [2021-12-21 11:26:01,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014352673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:01,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:01,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:01,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450285713] [2021-12-21 11:26:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:01,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:26:01,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:01,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:26:01,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:26:01,524 INFO L87 Difference]: Start difference. First operand 6904 states and 9161 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:03,991 INFO L93 Difference]: Finished difference Result 16619 states and 22099 transitions. [2021-12-21 11:26:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 11:26:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2021-12-21 11:26:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:04,037 INFO L225 Difference]: With dead ends: 16619 [2021-12-21 11:26:04,037 INFO L226 Difference]: Without dead ends: 9664 [2021-12-21 11:26:04,045 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 [2021-12-21 11:26:04,046 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 515 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:04,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 637 Invalid, 3725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 11:26:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2021-12-21 11:26:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 8974. [2021-12-21 11:26:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8974 states, 8973 states have (on average 1.1909060514877967) internal successors, (10686), 8973 states have internal predecessors, (10686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8974 states to 8974 states and 10686 transitions. [2021-12-21 11:26:04,173 INFO L78 Accepts]: Start accepts. Automaton has 8974 states and 10686 transitions. Word has length 308 [2021-12-21 11:26:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:04,174 INFO L470 AbstractCegarLoop]: Abstraction has 8974 states and 10686 transitions. [2021-12-21 11:26:04,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8974 states and 10686 transitions. [2021-12-21 11:26:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2021-12-21 11:26:04,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:04,188 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:04,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 11:26:04,189 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash 34123764, now seen corresponding path program 1 times [2021-12-21 11:26:04,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:04,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45587069] [2021-12-21 11:26:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:04,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2021-12-21 11:26:04,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:04,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45587069] [2021-12-21 11:26:04,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45587069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:04,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:04,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:26:04,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986607017] [2021-12-21 11:26:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:04,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:04,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:04,668 INFO L87 Difference]: Start difference. First operand 8974 states and 10686 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:06,335 INFO L93 Difference]: Finished difference Result 20016 states and 24053 transitions. [2021-12-21 11:26:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:06,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 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 940 [2021-12-21 11:26:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:06,359 INFO L225 Difference]: With dead ends: 20016 [2021-12-21 11:26:06,359 INFO L226 Difference]: Without dead ends: 11044 [2021-12-21 11:26:06,368 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 [2021-12-21 11:26:06,368 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 249 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:06,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 77 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 11:26:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2021-12-21 11:26:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 11044. [2021-12-21 11:26:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11044 states, 11043 states have (on average 1.1927918138187086) internal successors, (13172), 11043 states have internal predecessors, (13172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11044 states to 11044 states and 13172 transitions. [2021-12-21 11:26:06,538 INFO L78 Accepts]: Start accepts. Automaton has 11044 states and 13172 transitions. Word has length 940 [2021-12-21 11:26:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:06,539 INFO L470 AbstractCegarLoop]: Abstraction has 11044 states and 13172 transitions. [2021-12-21 11:26:06,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 11044 states and 13172 transitions. [2021-12-21 11:26:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2021-12-21 11:26:06,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:06,556 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:06,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 11:26:06,557 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1574655155, now seen corresponding path program 1 times [2021-12-21 11:26:06,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536151077] [2021-12-21 11:26:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:06,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2021-12-21 11:26:06,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536151077] [2021-12-21 11:26:06,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536151077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:06,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:06,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:26:06,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109137146] [2021-12-21 11:26:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:06,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:06,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:06,862 INFO L87 Difference]: Start difference. First operand 11044 states and 13172 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:08,201 INFO L93 Difference]: Finished difference Result 26916 states and 33024 transitions. [2021-12-21 11:26:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:08,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 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 945 [2021-12-21 11:26:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:08,272 INFO L225 Difference]: With dead ends: 26916 [2021-12-21 11:26:08,272 INFO L226 Difference]: Without dead ends: 15874 [2021-12-21 11:26:08,282 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 [2021-12-21 11:26:08,297 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:08,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 389 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 11:26:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2021-12-21 11:26:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 14494. [2021-12-21 11:26:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14494 states, 14493 states have (on average 1.1621472434968605) internal successors, (16843), 14493 states have internal predecessors, (16843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14494 states to 14494 states and 16843 transitions. [2021-12-21 11:26:08,541 INFO L78 Accepts]: Start accepts. Automaton has 14494 states and 16843 transitions. Word has length 945 [2021-12-21 11:26:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:08,541 INFO L470 AbstractCegarLoop]: Abstraction has 14494 states and 16843 transitions. [2021-12-21 11:26:08,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 14494 states and 16843 transitions. [2021-12-21 11:26:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2021-12-21 11:26:08,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:08,550 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:08,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 11:26:08,551 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:08,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1143261268, now seen corresponding path program 1 times [2021-12-21 11:26:08,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:08,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746845458] [2021-12-21 11:26:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:08,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-12-21 11:26:08,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:08,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746845458] [2021-12-21 11:26:08,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746845458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:08,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:08,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:08,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840420364] [2021-12-21 11:26:08,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:08,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:08,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:08,884 INFO L87 Difference]: Start difference. First operand 14494 states and 16843 transitions. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:10,701 INFO L93 Difference]: Finished difference Result 35196 states and 41360 transitions. [2021-12-21 11:26:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:10,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 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 1026 [2021-12-21 11:26:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:10,732 INFO L225 Difference]: With dead ends: 35196 [2021-12-21 11:26:10,732 INFO L226 Difference]: Without dead ends: 20704 [2021-12-21 11:26:10,749 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 [2021-12-21 11:26:10,752 INFO L933 BasicCegarLoop]: 1115 mSDtfsCounter, 653 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:10,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1122 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 11:26:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20704 states. [2021-12-21 11:26:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20704 to 20014. [2021-12-21 11:26:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20014 states, 20013 states have (on average 1.1491030829960525) internal successors, (22997), 20013 states have internal predecessors, (22997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20014 states to 20014 states and 22997 transitions. [2021-12-21 11:26:11,067 INFO L78 Accepts]: Start accepts. Automaton has 20014 states and 22997 transitions. Word has length 1026 [2021-12-21 11:26:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:11,068 INFO L470 AbstractCegarLoop]: Abstraction has 20014 states and 22997 transitions. [2021-12-21 11:26:11,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 20014 states and 22997 transitions. [2021-12-21 11:26:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2021-12-21 11:26:11,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:11,077 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:11,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 11:26:11,078 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1231047755, now seen corresponding path program 1 times [2021-12-21 11:26:11,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:11,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171199406] [2021-12-21 11:26:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:11,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-21 11:26:11,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:11,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171199406] [2021-12-21 11:26:11,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171199406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:11,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:11,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:11,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16279147] [2021-12-21 11:26:11,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:11,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:11,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:11,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:11,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:11,346 INFO L87 Difference]: Start difference. First operand 20014 states and 22997 transitions. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:13,088 INFO L93 Difference]: Finished difference Result 46236 states and 53538 transitions. [2021-12-21 11:26:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 1063 [2021-12-21 11:26:13,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:13,118 INFO L225 Difference]: With dead ends: 46236 [2021-12-21 11:26:13,118 INFO L226 Difference]: Without dead ends: 26224 [2021-12-21 11:26:13,132 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 [2021-12-21 11:26:13,132 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 575 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:13,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 1013 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 11:26:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26224 states. [2021-12-21 11:26:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26224 to 25534. [2021-12-21 11:26:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25534 states, 25533 states have (on average 1.1374691575608036) internal successors, (29043), 25533 states have internal predecessors, (29043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25534 states to 25534 states and 29043 transitions. [2021-12-21 11:26:13,379 INFO L78 Accepts]: Start accepts. Automaton has 25534 states and 29043 transitions. Word has length 1063 [2021-12-21 11:26:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:13,380 INFO L470 AbstractCegarLoop]: Abstraction has 25534 states and 29043 transitions. [2021-12-21 11:26:13,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 25534 states and 29043 transitions. [2021-12-21 11:26:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2021-12-21 11:26:13,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:13,392 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:13,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 11:26:13,393 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:13,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:13,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1498821086, now seen corresponding path program 1 times [2021-12-21 11:26:13,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:13,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103585640] [2021-12-21 11:26:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:13,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 703 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-21 11:26:13,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:13,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103585640] [2021-12-21 11:26:13,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103585640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:13,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:13,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 11:26:13,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539489948] [2021-12-21 11:26:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:13,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 11:26:13,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 11:26:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 11:26:13,726 INFO L87 Difference]: Start difference. First operand 25534 states and 29043 transitions. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:16,415 INFO L93 Difference]: Finished difference Result 58115 states and 66105 transitions. [2021-12-21 11:26:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 11:26:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 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 1140 [2021-12-21 11:26:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:16,447 INFO L225 Difference]: With dead ends: 58115 [2021-12-21 11:26:16,447 INFO L226 Difference]: Without dead ends: 28443 [2021-12-21 11:26:16,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 11:26:16,461 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 706 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 4050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:16,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 1140 Invalid, 4050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 11:26:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28443 states. [2021-12-21 11:26:16,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28443 to 27604. [2021-12-21 11:26:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27604 states, 27603 states have (on average 1.083577871970438) internal successors, (29910), 27603 states have internal predecessors, (29910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27604 states to 27604 states and 29910 transitions. [2021-12-21 11:26:16,794 INFO L78 Accepts]: Start accepts. Automaton has 27604 states and 29910 transitions. Word has length 1140 [2021-12-21 11:26:16,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:16,795 INFO L470 AbstractCegarLoop]: Abstraction has 27604 states and 29910 transitions. [2021-12-21 11:26:16,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:16,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27604 states and 29910 transitions. [2021-12-21 11:26:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2021-12-21 11:26:16,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:16,811 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:16,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 11:26:16,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash -472376621, now seen corresponding path program 1 times [2021-12-21 11:26:16,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:16,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458263819] [2021-12-21 11:26:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:16,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2021-12-21 11:26:17,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458263819] [2021-12-21 11:26:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458263819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:17,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343223487] [2021-12-21 11:26:17,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:17,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:17,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:17,142 INFO L87 Difference]: Start difference. First operand 27604 states and 29910 transitions. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:18,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:18,684 INFO L93 Difference]: Finished difference Result 58656 states and 63636 transitions. [2021-12-21 11:26:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:18,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 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 1144 [2021-12-21 11:26:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:18,752 INFO L225 Difference]: With dead ends: 58656 [2021-12-21 11:26:18,752 INFO L226 Difference]: Without dead ends: 31054 [2021-12-21 11:26:18,787 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 [2021-12-21 11:26:18,790 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 587 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:18,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 227 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 11:26:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2021-12-21 11:26:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 31054. [2021-12-21 11:26:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31054 states, 31053 states have (on average 1.0815702186584226) internal successors, (33586), 31053 states have internal predecessors, (33586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 33586 transitions. [2021-12-21 11:26:19,292 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 33586 transitions. Word has length 1144 [2021-12-21 11:26:19,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:19,292 INFO L470 AbstractCegarLoop]: Abstraction has 31054 states and 33586 transitions. [2021-12-21 11:26:19,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 33586 transitions. [2021-12-21 11:26:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2021-12-21 11:26:19,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:19,344 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:19,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 11:26:19,345 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1154403632, now seen corresponding path program 1 times [2021-12-21 11:26:19,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:19,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728860694] [2021-12-21 11:26:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:19,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2021-12-21 11:26:19,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:19,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728860694] [2021-12-21 11:26:19,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728860694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:19,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:19,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:19,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436085822] [2021-12-21 11:26:19,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:19,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:19,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:19,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:19,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:19,790 INFO L87 Difference]: Start difference. First operand 31054 states and 33586 transitions. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:21,175 INFO L93 Difference]: Finished difference Result 80046 states and 86996 transitions. [2021-12-21 11:26:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:21,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 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 1199 [2021-12-21 11:26:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:21,228 INFO L225 Difference]: With dead ends: 80046 [2021-12-21 11:26:21,228 INFO L226 Difference]: Without dead ends: 48994 [2021-12-21 11:26:21,252 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 [2021-12-21 11:26:21,252 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 682 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:21,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 912 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 11:26:21,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48994 states. [2021-12-21 11:26:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48994 to 47614. [2021-12-21 11:26:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47614 states, 47613 states have (on average 1.0729842690021634) internal successors, (51088), 47613 states have internal predecessors, (51088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47614 states to 47614 states and 51088 transitions. [2021-12-21 11:26:21,744 INFO L78 Accepts]: Start accepts. Automaton has 47614 states and 51088 transitions. Word has length 1199 [2021-12-21 11:26:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:21,745 INFO L470 AbstractCegarLoop]: Abstraction has 47614 states and 51088 transitions. [2021-12-21 11:26:21,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 47614 states and 51088 transitions. [2021-12-21 11:26:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1224 [2021-12-21 11:26:21,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:21,763 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:21,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 11:26:21,763 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:21,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1453857508, now seen corresponding path program 1 times [2021-12-21 11:26:21,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:21,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447556707] [2021-12-21 11:26:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:21,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 1148 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-12-21 11:26:22,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:22,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447556707] [2021-12-21 11:26:22,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447556707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:22,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:22,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:22,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133246511] [2021-12-21 11:26:22,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:22,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:22,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:22,169 INFO L87 Difference]: Start difference. First operand 47614 states and 51088 transitions. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:23,810 INFO L93 Difference]: Finished difference Result 94536 states and 101480 transitions. [2021-12-21 11:26:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 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 1223 [2021-12-21 11:26:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:23,879 INFO L225 Difference]: With dead ends: 94536 [2021-12-21 11:26:23,880 INFO L226 Difference]: Without dead ends: 46924 [2021-12-21 11:26:23,911 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 [2021-12-21 11:26:23,911 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:23,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 953 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 11:26:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46924 states. [2021-12-21 11:26:24,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46924 to 46924. [2021-12-21 11:26:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46924 states, 46923 states have (on average 1.0614623958399931) internal successors, (49807), 46923 states have internal predecessors, (49807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46924 states to 46924 states and 49807 transitions. [2021-12-21 11:26:24,435 INFO L78 Accepts]: Start accepts. Automaton has 46924 states and 49807 transitions. Word has length 1223 [2021-12-21 11:26:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:24,436 INFO L470 AbstractCegarLoop]: Abstraction has 46924 states and 49807 transitions. [2021-12-21 11:26:24,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 46924 states and 49807 transitions. [2021-12-21 11:26:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1238 [2021-12-21 11:26:24,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:24,453 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:24,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 11:26:24,453 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash -907579367, now seen corresponding path program 1 times [2021-12-21 11:26:24,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:24,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985444473] [2021-12-21 11:26:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:24,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 1087 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-12-21 11:26:24,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985444473] [2021-12-21 11:26:24,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985444473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:24,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:24,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:24,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808960202] [2021-12-21 11:26:24,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:24,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:24,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:24,804 INFO L87 Difference]: Start difference. First operand 46924 states and 49807 transitions. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:26,356 INFO L93 Difference]: Finished difference Result 113856 states and 121551 transitions. [2021-12-21 11:26:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:26,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 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 1237 [2021-12-21 11:26:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:26,432 INFO L225 Difference]: With dead ends: 113856 [2021-12-21 11:26:26,432 INFO L226 Difference]: Without dead ends: 66934 [2021-12-21 11:26:26,456 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 [2021-12-21 11:26:26,456 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 646 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:26,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 879 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 11:26:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66934 states. [2021-12-21 11:26:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66934 to 66934. [2021-12-21 11:26:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66934 states, 66933 states have (on average 1.053516202769934) internal successors, (70515), 66933 states have internal predecessors, (70515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66934 states to 66934 states and 70515 transitions. [2021-12-21 11:26:27,246 INFO L78 Accepts]: Start accepts. Automaton has 66934 states and 70515 transitions. Word has length 1237 [2021-12-21 11:26:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:27,247 INFO L470 AbstractCegarLoop]: Abstraction has 66934 states and 70515 transitions. [2021-12-21 11:26:27,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 66934 states and 70515 transitions. [2021-12-21 11:26:27,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1256 [2021-12-21 11:26:27,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:27,396 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:27,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 11:26:27,396 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:27,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1744545884, now seen corresponding path program 1 times [2021-12-21 11:26:27,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:27,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219548641] [2021-12-21 11:26:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:27,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 460 proven. 694 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-12-21 11:26:28,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:28,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219548641] [2021-12-21 11:26:28,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219548641] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 11:26:28,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780126331] [2021-12-21 11:26:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:28,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 11:26:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:26:28,053 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) [2021-12-21 11:26:28,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 11:26:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:28,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 11:26:28,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:26:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 549 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2021-12-21 11:26:30,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:26:30,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780126331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:30,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 11:26:30,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-21 11:26:30,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237642160] [2021-12-21 11:26:30,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:30,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:30,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 11:26:30,207 INFO L87 Difference]: Start difference. First operand 66934 states and 70515 transitions. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:32,070 INFO L93 Difference]: Finished difference Result 138696 states and 145907 transitions. [2021-12-21 11:26:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:32,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 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 1255 [2021-12-21 11:26:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:32,159 INFO L225 Difference]: With dead ends: 138696 [2021-12-21 11:26:32,159 INFO L226 Difference]: Without dead ends: 66934 [2021-12-21 11:26:32,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1255 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 11:26:32,189 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 627 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:32,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 878 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 11:26:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66934 states. [2021-12-21 11:26:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66934 to 66934. [2021-12-21 11:26:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66934 states, 66933 states have (on average 1.0410559813544888) internal successors, (69681), 66933 states have internal predecessors, (69681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66934 states to 66934 states and 69681 transitions. [2021-12-21 11:26:33,012 INFO L78 Accepts]: Start accepts. Automaton has 66934 states and 69681 transitions. Word has length 1255 [2021-12-21 11:26:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:33,013 INFO L470 AbstractCegarLoop]: Abstraction has 66934 states and 69681 transitions. [2021-12-21 11:26:33,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 66934 states and 69681 transitions. [2021-12-21 11:26:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1364 [2021-12-21 11:26:33,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:33,034 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:33,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 11:26:33,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 11:26:33,255 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:33,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -470662767, now seen corresponding path program 1 times [2021-12-21 11:26:33,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:33,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609577022] [2021-12-21 11:26:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:33,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-12-21 11:26:33,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:33,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609577022] [2021-12-21 11:26:33,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609577022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:33,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:33,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:33,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265839963] [2021-12-21 11:26:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:33,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:26:33,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:33,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:26:33,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:26:33,750 INFO L87 Difference]: Start difference. First operand 66934 states and 69681 transitions. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:36,313 INFO L93 Difference]: Finished difference Result 133176 states and 138669 transitions. [2021-12-21 11:26:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 11:26:36,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 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 1363 [2021-12-21 11:26:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:36,388 INFO L225 Difference]: With dead ends: 133176 [2021-12-21 11:26:36,388 INFO L226 Difference]: Without dead ends: 66934 [2021-12-21 11:26:36,427 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 [2021-12-21 11:26:36,428 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 796 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:36,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 69 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 11:26:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66934 states. [2021-12-21 11:26:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66934 to 66244. [2021-12-21 11:26:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66244 states, 66243 states have (on average 1.0412269975695545) internal successors, (68974), 66243 states have internal predecessors, (68974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66244 states to 66244 states and 68974 transitions. [2021-12-21 11:26:37,335 INFO L78 Accepts]: Start accepts. Automaton has 66244 states and 68974 transitions. Word has length 1363 [2021-12-21 11:26:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:37,335 INFO L470 AbstractCegarLoop]: Abstraction has 66244 states and 68974 transitions. [2021-12-21 11:26:37,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 66244 states and 68974 transitions. [2021-12-21 11:26:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1443 [2021-12-21 11:26:37,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:37,365 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:37,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 11:26:37,365 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash 726521568, now seen corresponding path program 1 times [2021-12-21 11:26:37,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:37,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714610134] [2021-12-21 11:26:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:37,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2383 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 2150 trivial. 0 not checked. [2021-12-21 11:26:37,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:37,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714610134] [2021-12-21 11:26:37,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714610134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:37,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:37,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:37,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207866897] [2021-12-21 11:26:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:37,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:37,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:37,951 INFO L87 Difference]: Start difference. First operand 66244 states and 68974 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:39,662 INFO L93 Difference]: Finished difference Result 131796 states and 137255 transitions. [2021-12-21 11:26:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:39,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 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 1442 [2021-12-21 11:26:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:39,732 INFO L225 Difference]: With dead ends: 131796 [2021-12-21 11:26:39,732 INFO L226 Difference]: Without dead ends: 66244 [2021-12-21 11:26:39,760 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 [2021-12-21 11:26:39,761 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 718 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:39,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 889 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 11:26:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66244 states. [2021-12-21 11:26:40,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66244 to 66244. [2021-12-21 11:26:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66244 states, 66243 states have (on average 1.0290143864257355) internal successors, (68165), 66243 states have internal predecessors, (68165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66244 states to 66244 states and 68165 transitions. [2021-12-21 11:26:40,468 INFO L78 Accepts]: Start accepts. Automaton has 66244 states and 68165 transitions. Word has length 1442 [2021-12-21 11:26:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:40,469 INFO L470 AbstractCegarLoop]: Abstraction has 66244 states and 68165 transitions. [2021-12-21 11:26:40,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 66244 states and 68165 transitions. [2021-12-21 11:26:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1464 [2021-12-21 11:26:40,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:40,646 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:40,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 11:26:40,646 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1206823915, now seen corresponding path program 1 times [2021-12-21 11:26:40,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:40,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225082714] [2021-12-21 11:26:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:40,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 1342 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-12-21 11:26:41,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225082714] [2021-12-21 11:26:41,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225082714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:41,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:41,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:41,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522927975] [2021-12-21 11:26:41,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:41,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:41,084 INFO L87 Difference]: Start difference. First operand 66244 states and 68165 transitions. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:42,414 INFO L93 Difference]: Finished difference Result 131796 states and 135637 transitions. [2021-12-21 11:26:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:42,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 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 1463 [2021-12-21 11:26:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:42,483 INFO L225 Difference]: With dead ends: 131796 [2021-12-21 11:26:42,483 INFO L226 Difference]: Without dead ends: 66244 [2021-12-21 11:26:42,516 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 [2021-12-21 11:26:42,517 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 504 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:42,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 924 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 11:26:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66244 states. [2021-12-21 11:26:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66244 to 64174. [2021-12-21 11:26:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64174 states, 64173 states have (on average 1.0256494164212364) internal successors, (65819), 64173 states have internal predecessors, (65819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64174 states to 64174 states and 65819 transitions. [2021-12-21 11:26:43,171 INFO L78 Accepts]: Start accepts. Automaton has 64174 states and 65819 transitions. Word has length 1463 [2021-12-21 11:26:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:43,172 INFO L470 AbstractCegarLoop]: Abstraction has 64174 states and 65819 transitions. [2021-12-21 11:26:43,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 64174 states and 65819 transitions. [2021-12-21 11:26:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1516 [2021-12-21 11:26:43,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:43,419 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:43,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 11:26:43,419 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:43,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1784470462, now seen corresponding path program 1 times [2021-12-21 11:26:43,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:43,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540216664] [2021-12-21 11:26:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:43,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2021-12-21 11:26:43,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540216664] [2021-12-21 11:26:43,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540216664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:43,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:43,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:43,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450395381] [2021-12-21 11:26:43,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:44,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:44,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:44,001 INFO L87 Difference]: Start difference. First operand 64174 states and 65819 transitions. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:45,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:45,637 INFO L93 Difference]: Finished difference Result 128346 states and 131641 transitions. [2021-12-21 11:26:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:45,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 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 1515 [2021-12-21 11:26:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:45,706 INFO L225 Difference]: With dead ends: 128346 [2021-12-21 11:26:45,706 INFO L226 Difference]: Without dead ends: 64864 [2021-12-21 11:26:45,743 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 [2021-12-21 11:26:45,743 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 619 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:45,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 67 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 11:26:45,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64864 states. [2021-12-21 11:26:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64864 to 64174. [2021-12-21 11:26:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64174 states, 64173 states have (on average 1.0250261013198698) internal successors, (65779), 64173 states have internal predecessors, (65779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64174 states to 64174 states and 65779 transitions. [2021-12-21 11:26:46,455 INFO L78 Accepts]: Start accepts. Automaton has 64174 states and 65779 transitions. Word has length 1515 [2021-12-21 11:26:46,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:46,456 INFO L470 AbstractCegarLoop]: Abstraction has 64174 states and 65779 transitions. [2021-12-21 11:26:46,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 64174 states and 65779 transitions. [2021-12-21 11:26:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1583 [2021-12-21 11:26:46,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:46,490 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:46,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 11:26:46,490 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1338212191, now seen corresponding path program 1 times [2021-12-21 11:26:46,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:46,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325504578] [2021-12-21 11:26:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:46,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 1866 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-12-21 11:26:47,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:47,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325504578] [2021-12-21 11:26:47,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325504578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:47,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:47,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:47,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723402877] [2021-12-21 11:26:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:47,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:47,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:47,056 INFO L87 Difference]: Start difference. First operand 64174 states and 65779 transitions. Second operand has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:48,654 INFO L93 Difference]: Finished difference Result 135936 states and 139474 transitions. [2021-12-21 11:26:48,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:48,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 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 1582 [2021-12-21 11:26:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:48,732 INFO L225 Difference]: With dead ends: 135936 [2021-12-21 11:26:48,733 INFO L226 Difference]: Without dead ends: 72454 [2021-12-21 11:26:48,742 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 [2021-12-21 11:26:48,743 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 344 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:48,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 197 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 11:26:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72454 states. [2021-12-21 11:26:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72454 to 72454. [2021-12-21 11:26:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72454 states, 72453 states have (on average 1.0219590631167792) internal successors, (74044), 72453 states have internal predecessors, (74044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72454 states to 72454 states and 74044 transitions. [2021-12-21 11:26:49,556 INFO L78 Accepts]: Start accepts. Automaton has 72454 states and 74044 transitions. Word has length 1582 [2021-12-21 11:26:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:49,557 INFO L470 AbstractCegarLoop]: Abstraction has 72454 states and 74044 transitions. [2021-12-21 11:26:49,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 72454 states and 74044 transitions. [2021-12-21 11:26:49,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1906 [2021-12-21 11:26:49,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:49,621 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:49,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 11:26:49,621 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1466459561, now seen corresponding path program 1 times [2021-12-21 11:26:49,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:49,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485699195] [2021-12-21 11:26:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:49,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat