./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label46.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 41cafc53a40b6e7779bbda9324b8e7811f318944543219bcda44525ed08008a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:33:54,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:33:54,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:33:54,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:33:54,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:33:54,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:33:54,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:33:54,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:33:54,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:33:54,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:33:54,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:33:54,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:33:54,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:33:54,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:33:54,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:33:54,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:33:54,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:33:54,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:33:54,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:33:54,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:33:54,591 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:33:54,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:33:54,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:33:54,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:33:54,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:33:54,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:33:54,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:33:54,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:33:54,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:33:54,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:33:54,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:33:54,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:33:54,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:33:54,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:33:54,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:33:54,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:33:54,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:33:54,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:33:54,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:33:54,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:33:54,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:33:54,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:33:54,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:33:54,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:33:54,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:33:54,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:33:54,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:33:54,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:33:54,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:33:54,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:33:54,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:33:54,642 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:33:54,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:33:54,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:33:54,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:33:54,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:33:54,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:33:54,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:33:54,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:33:54,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:33:54,644 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:33:54,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:33:54,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:33:54,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:33:54,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:33:54,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:33:54,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:33:54,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:33:54,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:33:54,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:33:54,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:33:54,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:33:54,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:33:54,646 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:33:54,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:33:54,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:33:54,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cafc53a40b6e7779bbda9324b8e7811f318944543219bcda44525ed08008a3 [2022-07-12 01:33:54,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:33:54,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:33:54,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:33:54,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:33:54,884 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:33:54,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label46.c [2022-07-12 01:33:54,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211b20aaf/735f7deb61544ba78a30d25c1a954700/FLAGbc3270b34 [2022-07-12 01:33:55,520 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:33:55,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label46.c [2022-07-12 01:33:55,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211b20aaf/735f7deb61544ba78a30d25c1a954700/FLAGbc3270b34 [2022-07-12 01:33:55,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211b20aaf/735f7deb61544ba78a30d25c1a954700 [2022-07-12 01:33:55,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:33:55,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:33:55,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:33:55,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:33:55,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:33:55,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:33:55" (1/1) ... [2022-07-12 01:33:55,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793b25fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:55, skipping insertion in model container [2022-07-12 01:33:55,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:33:55" (1/1) ... [2022-07-12 01:33:55,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:33:56,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:33:56,213 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/Problem17_label46.c[1649,1662] [2022-07-12 01:33:56,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:33:56,773 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:33:56,792 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/Problem17_label46.c[1649,1662] [2022-07-12 01:33:57,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:33:57,056 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:33:57,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57 WrapperNode [2022-07-12 01:33:57,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:33:57,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:33:57,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:33:57,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:33:57,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,412 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-12 01:33:57,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:33:57,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:33:57,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:33:57,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:33:57,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:33:57,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:33:57,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:33:57,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:33:57,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (1/1) ... [2022-07-12 01:33:57,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:33:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:57,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 01:33:57,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 01:33:57,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:33:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:33:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:33:57,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:33:57,825 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:33:57,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:34:00,823 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:34:00,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:34:00,843 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:34:00,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:34:00 BoogieIcfgContainer [2022-07-12 01:34:00,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:34:00,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:34:00,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:34:00,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:34:00,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:33:55" (1/3) ... [2022-07-12 01:34:00,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f54c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:34:00, skipping insertion in model container [2022-07-12 01:34:00,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:33:57" (2/3) ... [2022-07-12 01:34:00,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f54c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:34:00, skipping insertion in model container [2022-07-12 01:34:00,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:34:00" (3/3) ... [2022-07-12 01:34:00,855 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2022-07-12 01:34:00,867 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:34:00,867 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:34:00,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:34:00,947 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56cff85, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c31b77c [2022-07-12 01:34:00,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:34:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 01:34:00,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:00,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:00,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:00,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-07-12 01:34:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:00,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881444223] [2022-07-12 01:34:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:00,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:01,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:01,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881444223] [2022-07-12 01:34:01,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881444223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:01,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:01,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710776135] [2022-07-12 01:34:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:01,194 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:03,832 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-07-12 01:34:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:03,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-07-12 01:34:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:03,851 INFO L225 Difference]: With dead ends: 1642 [2022-07-12 01:34:03,851 INFO L226 Difference]: Without dead ends: 975 [2022-07-12 01:34:03,856 INFO L412 NwaCegarLoop]: 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 [2022-07-12 01:34:03,859 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 480 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:03,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:34:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-12 01:34:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-07-12 01:34:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-07-12 01:34:03,948 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 10 [2022-07-12 01:34:03,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:03,951 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-07-12 01:34:03,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-07-12 01:34:03,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 01:34:03,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:03,955 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 01:34:03,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:34:03,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash -225164890, now seen corresponding path program 1 times [2022-07-12 01:34:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:03,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121579686] [2022-07-12 01:34:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:04,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:04,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121579686] [2022-07-12 01:34:04,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121579686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:04,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:04,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:04,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790858771] [2022-07-12 01:34:04,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:04,144 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:06,219 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-07-12 01:34:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:06,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-12 01:34:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:06,232 INFO L225 Difference]: With dead ends: 2814 [2022-07-12 01:34:06,232 INFO L226 Difference]: Without dead ends: 1844 [2022-07-12 01:34:06,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:06,243 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 481 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:06,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:34:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-12 01:34:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-12 01:34:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-07-12 01:34:06,295 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 80 [2022-07-12 01:34:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:06,296 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-07-12 01:34:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-07-12 01:34:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 01:34:06,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:06,300 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 01:34:06,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:34:06,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:06,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1464739895, now seen corresponding path program 1 times [2022-07-12 01:34:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801818841] [2022-07-12 01:34:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:06,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:06,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801818841] [2022-07-12 01:34:06,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801818841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:06,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:06,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:06,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384319403] [2022-07-12 01:34:06,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:06,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:06,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:06,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:06,447 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:08,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:08,440 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-07-12 01:34:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:08,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-07-12 01:34:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:08,450 INFO L225 Difference]: With dead ends: 5395 [2022-07-12 01:34:08,450 INFO L226 Difference]: Without dead ends: 2701 [2022-07-12 01:34:08,453 INFO L412 NwaCegarLoop]: 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 [2022-07-12 01:34:08,454 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:08,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 01:34:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-07-12 01:34:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-07-12 01:34:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-07-12 01:34:08,498 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 102 [2022-07-12 01:34:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:08,499 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-07-12 01:34:08,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-07-12 01:34:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 01:34:08,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:08,502 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:08,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:34:08,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1549840643, now seen corresponding path program 1 times [2022-07-12 01:34:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:08,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359661372] [2022-07-12 01:34:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:08,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:08,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359661372] [2022-07-12 01:34:08,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359661372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:08,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:08,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:08,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160156884] [2022-07-12 01:34:08,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:08,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:08,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:08,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:08,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:08,672 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:10,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:10,339 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-07-12 01:34:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:10,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-07-12 01:34:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:10,359 INFO L225 Difference]: With dead ends: 7108 [2022-07-12 01:34:10,359 INFO L226 Difference]: Without dead ends: 4409 [2022-07-12 01:34:10,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:10,364 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:10,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 01:34:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-07-12 01:34:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-07-12 01:34:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-07-12 01:34:10,432 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 162 [2022-07-12 01:34:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:10,433 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-07-12 01:34:10,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-07-12 01:34:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 01:34:10,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:10,440 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:10,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:34:10,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:10,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2134418504, now seen corresponding path program 1 times [2022-07-12 01:34:10,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:10,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864646348] [2022-07-12 01:34:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:10,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 01:34:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:10,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864646348] [2022-07-12 01:34:10,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864646348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:10,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:10,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:10,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351456522] [2022-07-12 01:34:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:10,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:10,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:10,576 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:12,257 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-07-12 01:34:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 164 [2022-07-12 01:34:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:12,280 INFO L225 Difference]: With dead ends: 10936 [2022-07-12 01:34:12,280 INFO L226 Difference]: Without dead ends: 6528 [2022-07-12 01:34:12,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:12,288 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 441 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:12,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 01:34:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-07-12 01:34:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-07-12 01:34:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-07-12 01:34:12,380 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 164 [2022-07-12 01:34:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:12,381 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-07-12 01:34:12,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-07-12 01:34:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-12 01:34:12,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:12,388 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:34:12,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 741644542, now seen corresponding path program 1 times [2022-07-12 01:34:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:12,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587689141] [2022-07-12 01:34:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:12,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:12,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:12,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587689141] [2022-07-12 01:34:12,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587689141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:34:12,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977266211] [2022-07-12 01:34:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:12,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:34:12,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:34:12,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:34:12,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:34:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:12,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 01:34:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:34:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:13,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:34:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:13,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977266211] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 01:34:13,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 01:34:13,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-12 01:34:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673820748] [2022-07-12 01:34:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:13,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:34:13,621 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:16,646 INFO L93 Difference]: Finished difference Result 15171 states and 17882 transitions. [2022-07-12 01:34:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:16,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2022-07-12 01:34:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:16,681 INFO L225 Difference]: With dead ends: 15171 [2022-07-12 01:34:16,681 INFO L226 Difference]: Without dead ends: 10791 [2022-07-12 01:34:16,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:34:16,690 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 980 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:16,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 145 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 01:34:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2022-07-12 01:34:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2022-07-12 01:34:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.1710233592880979) internal successors, (12633), 10788 states have internal predecessors, (12633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12633 transitions. [2022-07-12 01:34:16,869 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12633 transitions. Word has length 230 [2022-07-12 01:34:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:16,870 INFO L495 AbstractCegarLoop]: Abstraction has 10789 states and 12633 transitions. [2022-07-12 01:34:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12633 transitions. [2022-07-12 01:34:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-12 01:34:16,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:16,873 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:16,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 01:34:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 01:34:17,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1310280645, now seen corresponding path program 1 times [2022-07-12 01:34:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:17,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190911793] [2022-07-12 01:34:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 01:34:17,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:17,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190911793] [2022-07-12 01:34:17,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190911793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:17,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:17,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:17,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480902865] [2022-07-12 01:34:17,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:17,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:17,230 INFO L87 Difference]: Start difference. First operand 10789 states and 12633 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:18,931 INFO L93 Difference]: Finished difference Result 23703 states and 27793 transitions. [2022-07-12 01:34:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:18,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 242 [2022-07-12 01:34:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:18,957 INFO L225 Difference]: With dead ends: 23703 [2022-07-12 01:34:18,957 INFO L226 Difference]: Without dead ends: 12491 [2022-07-12 01:34:18,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:18,971 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:18,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 842 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 01:34:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2022-07-12 01:34:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12491. [2022-07-12 01:34:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 1.1501200960768614) internal successors, (14365), 12490 states have internal predecessors, (14365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 14365 transitions. [2022-07-12 01:34:19,142 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 14365 transitions. Word has length 242 [2022-07-12 01:34:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:19,142 INFO L495 AbstractCegarLoop]: Abstraction has 12491 states and 14365 transitions. [2022-07-12 01:34:19,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 14365 transitions. [2022-07-12 01:34:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-12 01:34:19,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:19,147 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-12 01:34:19,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:34:19,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:19,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2057438562, now seen corresponding path program 1 times [2022-07-12 01:34:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:19,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631857871] [2022-07-12 01:34:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 01:34:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:19,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631857871] [2022-07-12 01:34:19,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631857871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:19,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:19,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881593711] [2022-07-12 01:34:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:19,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:19,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:19,288 INFO L87 Difference]: Start difference. First operand 12491 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:21,142 INFO L93 Difference]: Finished difference Result 30511 states and 34976 transitions. [2022-07-12 01:34:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:21,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2022-07-12 01:34:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:21,172 INFO L225 Difference]: With dead ends: 30511 [2022-07-12 01:34:21,173 INFO L226 Difference]: Without dead ends: 15866 [2022-07-12 01:34:21,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:21,190 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 534 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:21,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 640 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:34:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15866 states. [2022-07-12 01:34:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15866 to 15010. [2022-07-12 01:34:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15010 states, 15009 states have (on average 1.1277233659804118) internal successors, (16926), 15009 states have internal predecessors, (16926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15010 states to 15010 states and 16926 transitions. [2022-07-12 01:34:21,381 INFO L78 Accepts]: Start accepts. Automaton has 15010 states and 16926 transitions. Word has length 282 [2022-07-12 01:34:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:21,382 INFO L495 AbstractCegarLoop]: Abstraction has 15010 states and 16926 transitions. [2022-07-12 01:34:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 15010 states and 16926 transitions. [2022-07-12 01:34:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-12 01:34:21,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:21,387 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-12 01:34:21,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 01:34:21,388 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1507858308, now seen corresponding path program 1 times [2022-07-12 01:34:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:21,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170337927] [2022-07-12 01:34:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 01:34:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:21,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170337927] [2022-07-12 01:34:21,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170337927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:21,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:21,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999726658] [2022-07-12 01:34:21,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:21,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:21,544 INFO L87 Difference]: Start difference. First operand 15010 states and 16926 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:23,491 INFO L93 Difference]: Finished difference Result 38116 states and 42953 transitions. [2022-07-12 01:34:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 304 [2022-07-12 01:34:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:23,537 INFO L225 Difference]: With dead ends: 38116 [2022-07-12 01:34:23,537 INFO L226 Difference]: Without dead ends: 23108 [2022-07-12 01:34:23,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:23,554 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 316 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:23,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 784 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:34:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23108 states. [2022-07-12 01:34:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23108 to 22244. [2022-07-12 01:34:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22244 states, 22243 states have (on average 1.1109562559007329) internal successors, (24711), 22243 states have internal predecessors, (24711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22244 states to 22244 states and 24711 transitions. [2022-07-12 01:34:23,830 INFO L78 Accepts]: Start accepts. Automaton has 22244 states and 24711 transitions. Word has length 304 [2022-07-12 01:34:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:23,830 INFO L495 AbstractCegarLoop]: Abstraction has 22244 states and 24711 transitions. [2022-07-12 01:34:23,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 22244 states and 24711 transitions. [2022-07-12 01:34:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-07-12 01:34:23,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:23,836 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-12 01:34:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:34:23,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1876690948, now seen corresponding path program 1 times [2022-07-12 01:34:23,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:23,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365268401] [2022-07-12 01:34:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:23,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-12 01:34:23,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:23,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365268401] [2022-07-12 01:34:23,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365268401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:23,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:23,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:23,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354372149] [2022-07-12 01:34:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:23,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:23,976 INFO L87 Difference]: Start difference. First operand 22244 states and 24711 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:25,452 INFO L93 Difference]: Finished difference Result 47458 states and 52810 transitions. [2022-07-12 01:34:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:25,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 309 [2022-07-12 01:34:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:25,485 INFO L225 Difference]: With dead ends: 47458 [2022-07-12 01:34:25,485 INFO L226 Difference]: Without dead ends: 24791 [2022-07-12 01:34:25,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:25,503 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:25,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 702 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24791 states. [2022-07-12 01:34:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24791 to 24785. [2022-07-12 01:34:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24785 states, 24784 states have (on average 1.107125564880568) internal successors, (27439), 24784 states have internal predecessors, (27439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24785 states to 24785 states and 27439 transitions. [2022-07-12 01:34:25,749 INFO L78 Accepts]: Start accepts. Automaton has 24785 states and 27439 transitions. Word has length 309 [2022-07-12 01:34:25,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:25,749 INFO L495 AbstractCegarLoop]: Abstraction has 24785 states and 27439 transitions. [2022-07-12 01:34:25,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 24785 states and 27439 transitions. [2022-07-12 01:34:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-07-12 01:34:25,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:25,757 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:25,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:34:25,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:25,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:25,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2084541808, now seen corresponding path program 1 times [2022-07-12 01:34:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:25,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860054960] [2022-07-12 01:34:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:34:25,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860054960] [2022-07-12 01:34:25,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860054960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:25,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:25,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:25,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799394994] [2022-07-12 01:34:25,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:25,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:25,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:25,941 INFO L87 Difference]: Start difference. First operand 24785 states and 27439 transitions. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:28,458 INFO L93 Difference]: Finished difference Result 63641 states and 70643 transitions. [2022-07-12 01:34:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:28,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 349 [2022-07-12 01:34:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:28,501 INFO L225 Difference]: With dead ends: 63641 [2022-07-12 01:34:28,502 INFO L226 Difference]: Without dead ends: 38008 [2022-07-12 01:34:28,526 INFO L412 NwaCegarLoop]: 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 [2022-07-12 01:34:28,528 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 556 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:28,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 326 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2614 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 01:34:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38008 states. [2022-07-12 01:34:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38008 to 37986. [2022-07-12 01:34:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37986 states, 37985 states have (on average 1.1046728971962616) internal successors, (41961), 37985 states have internal predecessors, (41961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:29,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37986 states to 37986 states and 41961 transitions. [2022-07-12 01:34:29,151 INFO L78 Accepts]: Start accepts. Automaton has 37986 states and 41961 transitions. Word has length 349 [2022-07-12 01:34:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:29,152 INFO L495 AbstractCegarLoop]: Abstraction has 37986 states and 41961 transitions. [2022-07-12 01:34:29,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 37986 states and 41961 transitions. [2022-07-12 01:34:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-12 01:34:29,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:29,161 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-12 01:34:29,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:34:29,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:29,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1238549206, now seen corresponding path program 1 times [2022-07-12 01:34:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:29,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592068466] [2022-07-12 01:34:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:29,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:34:29,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:29,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592068466] [2022-07-12 01:34:29,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592068466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:29,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:29,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839584714] [2022-07-12 01:34:29,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:29,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:29,421 INFO L87 Difference]: Start difference. First operand 37986 states and 41961 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:31,218 INFO L93 Difference]: Finished difference Result 85365 states and 94453 transitions. [2022-07-12 01:34:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:31,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2022-07-12 01:34:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:31,269 INFO L225 Difference]: With dead ends: 85365 [2022-07-12 01:34:31,270 INFO L226 Difference]: Without dead ends: 47381 [2022-07-12 01:34:31,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:31,292 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 337 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:31,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 652 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47381 states. [2022-07-12 01:34:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47381 to 46935. [2022-07-12 01:34:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46935 states, 46934 states have (on average 1.1060212212894702) internal successors, (51910), 46934 states have internal predecessors, (51910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:31,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46935 states to 46935 states and 51910 transitions. [2022-07-12 01:34:31,953 INFO L78 Accepts]: Start accepts. Automaton has 46935 states and 51910 transitions. Word has length 353 [2022-07-12 01:34:31,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:31,954 INFO L495 AbstractCegarLoop]: Abstraction has 46935 states and 51910 transitions. [2022-07-12 01:34:31,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:31,954 INFO L276 IsEmpty]: Start isEmpty. Operand 46935 states and 51910 transitions. [2022-07-12 01:34:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-07-12 01:34:31,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:31,969 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:34:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 01:34:31,970 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2012753800, now seen corresponding path program 1 times [2022-07-12 01:34:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162054774] [2022-07-12 01:34:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:31,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 01:34:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:32,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162054774] [2022-07-12 01:34:32,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162054774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:32,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:32,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:32,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702800540] [2022-07-12 01:34:32,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:32,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:32,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:32,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:32,287 INFO L87 Difference]: Start difference. First operand 46935 states and 51910 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:34,022 INFO L93 Difference]: Finished difference Result 104932 states and 116096 transitions. [2022-07-12 01:34:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:34,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 424 [2022-07-12 01:34:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:34,093 INFO L225 Difference]: With dead ends: 104932 [2022-07-12 01:34:34,094 INFO L226 Difference]: Without dead ends: 57999 [2022-07-12 01:34:34,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:34,124 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 305 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:34,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 327 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57999 states. [2022-07-12 01:34:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57999 to 54591. [2022-07-12 01:34:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54591 states, 54590 states have (on average 1.0996519509067595) internal successors, (60030), 54590 states have internal predecessors, (60030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54591 states to 54591 states and 60030 transitions. [2022-07-12 01:34:34,810 INFO L78 Accepts]: Start accepts. Automaton has 54591 states and 60030 transitions. Word has length 424 [2022-07-12 01:34:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:34,810 INFO L495 AbstractCegarLoop]: Abstraction has 54591 states and 60030 transitions. [2022-07-12 01:34:34,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 54591 states and 60030 transitions. [2022-07-12 01:34:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-07-12 01:34:34,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:34,829 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:34,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:34:34,829 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:34,830 INFO L85 PathProgramCache]: Analyzing trace with hash 368948727, now seen corresponding path program 1 times [2022-07-12 01:34:34,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:34,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899840595] [2022-07-12 01:34:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:34,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:34:35,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:35,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899840595] [2022-07-12 01:34:35,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899840595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:35,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:35,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:35,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932167468] [2022-07-12 01:34:35,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:35,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:35,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:35,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:35,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:35,179 INFO L87 Difference]: Start difference. First operand 54591 states and 60030 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:36,937 INFO L93 Difference]: Finished difference Result 119829 states and 131917 transitions. [2022-07-12 01:34:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 473 [2022-07-12 01:34:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:37,008 INFO L225 Difference]: With dead ends: 119829 [2022-07-12 01:34:37,008 INFO L226 Difference]: Without dead ends: 65240 [2022-07-12 01:34:37,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:37,043 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 316 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:37,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 325 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65240 states. [2022-07-12 01:34:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65240 to 57569. [2022-07-12 01:34:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57569 states, 57568 states have (on average 1.097206781545303) internal successors, (63164), 57568 states have internal predecessors, (63164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57569 states to 57569 states and 63164 transitions. [2022-07-12 01:34:37,826 INFO L78 Accepts]: Start accepts. Automaton has 57569 states and 63164 transitions. Word has length 473 [2022-07-12 01:34:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:37,827 INFO L495 AbstractCegarLoop]: Abstraction has 57569 states and 63164 transitions. [2022-07-12 01:34:37,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 57569 states and 63164 transitions. [2022-07-12 01:34:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-07-12 01:34:37,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:37,839 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:37,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:34:37,839 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -686282333, now seen corresponding path program 1 times [2022-07-12 01:34:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:37,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781477830] [2022-07-12 01:34:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-12 01:34:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:38,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781477830] [2022-07-12 01:34:38,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781477830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:38,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:38,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:34:38,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672471076] [2022-07-12 01:34:38,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:38,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:38,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:38,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:38,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:38,058 INFO L87 Difference]: Start difference. First operand 57569 states and 63164 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:39,332 INFO L93 Difference]: Finished difference Result 114273 states and 125404 transitions. [2022-07-12 01:34:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:39,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 484 [2022-07-12 01:34:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:39,393 INFO L225 Difference]: With dead ends: 114273 [2022-07-12 01:34:39,394 INFO L226 Difference]: Without dead ends: 56705 [2022-07-12 01:34:39,427 INFO L412 NwaCegarLoop]: 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 [2022-07-12 01:34:39,428 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:39,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 82 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 01:34:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56705 states. [2022-07-12 01:34:40,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56705 to 56701. [2022-07-12 01:34:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56701 states, 56700 states have (on average 1.0971428571428572) internal successors, (62208), 56700 states have internal predecessors, (62208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56701 states to 56701 states and 62208 transitions. [2022-07-12 01:34:40,168 INFO L78 Accepts]: Start accepts. Automaton has 56701 states and 62208 transitions. Word has length 484 [2022-07-12 01:34:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:40,169 INFO L495 AbstractCegarLoop]: Abstraction has 56701 states and 62208 transitions. [2022-07-12 01:34:40,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 56701 states and 62208 transitions. [2022-07-12 01:34:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-07-12 01:34:40,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:40,183 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:40,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 01:34:40,184 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 144822832, now seen corresponding path program 1 times [2022-07-12 01:34:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:40,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563597086] [2022-07-12 01:34:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:40,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-12 01:34:40,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:40,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563597086] [2022-07-12 01:34:40,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563597086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:40,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:40,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:40,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567811540] [2022-07-12 01:34:40,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:40,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:40,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:40,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:40,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:40,378 INFO L87 Difference]: Start difference. First operand 56701 states and 62208 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:42,302 INFO L93 Difference]: Finished difference Result 122760 states and 134268 transitions. [2022-07-12 01:34:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:42,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 488 [2022-07-12 01:34:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:42,371 INFO L225 Difference]: With dead ends: 122760 [2022-07-12 01:34:42,371 INFO L226 Difference]: Without dead ends: 66061 [2022-07-12 01:34:42,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:42,407 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 333 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:42,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 119 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 01:34:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66061 states. [2022-07-12 01:34:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66061 to 52842. [2022-07-12 01:34:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52842 states, 52841 states have (on average 1.088756836547378) internal successors, (57531), 52841 states have internal predecessors, (57531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52842 states to 52842 states and 57531 transitions. [2022-07-12 01:34:43,222 INFO L78 Accepts]: Start accepts. Automaton has 52842 states and 57531 transitions. Word has length 488 [2022-07-12 01:34:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:43,222 INFO L495 AbstractCegarLoop]: Abstraction has 52842 states and 57531 transitions. [2022-07-12 01:34:43,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 52842 states and 57531 transitions. [2022-07-12 01:34:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-07-12 01:34:43,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:43,240 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:43,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:34:43,240 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:43,241 INFO L85 PathProgramCache]: Analyzing trace with hash -439942955, now seen corresponding path program 1 times [2022-07-12 01:34:43,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:43,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550396136] [2022-07-12 01:34:43,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:43,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-12 01:34:43,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:43,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550396136] [2022-07-12 01:34:43,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550396136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:43,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:43,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:43,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454600593] [2022-07-12 01:34:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:43,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:43,458 INFO L87 Difference]: Start difference. First operand 52842 states and 57531 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:45,069 INFO L93 Difference]: Finished difference Result 108662 states and 118298 transitions. [2022-07-12 01:34:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:45,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 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 587 [2022-07-12 01:34:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:45,132 INFO L225 Difference]: With dead ends: 108662 [2022-07-12 01:34:45,132 INFO L226 Difference]: Without dead ends: 55397 [2022-07-12 01:34:45,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:45,165 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 453 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:45,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 651 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 01:34:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55397 states. [2022-07-12 01:34:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55397 to 51559. [2022-07-12 01:34:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51559 states, 51558 states have (on average 1.0857674851623413) internal successors, (55980), 51558 states have internal predecessors, (55980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51559 states to 51559 states and 55980 transitions. [2022-07-12 01:34:45,872 INFO L78 Accepts]: Start accepts. Automaton has 51559 states and 55980 transitions. Word has length 587 [2022-07-12 01:34:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:45,872 INFO L495 AbstractCegarLoop]: Abstraction has 51559 states and 55980 transitions. [2022-07-12 01:34:45,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 51559 states and 55980 transitions. [2022-07-12 01:34:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-07-12 01:34:45,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:45,894 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:45,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 01:34:45,894 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:45,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash 678088477, now seen corresponding path program 1 times [2022-07-12 01:34:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:45,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24125720] [2022-07-12 01:34:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:45,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-12 01:34:46,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:46,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24125720] [2022-07-12 01:34:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24125720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:46,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:46,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128223468] [2022-07-12 01:34:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:46,312 INFO L87 Difference]: Start difference. First operand 51559 states and 55980 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:47,858 INFO L93 Difference]: Finished difference Result 104388 states and 113357 transitions. [2022-07-12 01:34:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 625 [2022-07-12 01:34:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:47,922 INFO L225 Difference]: With dead ends: 104388 [2022-07-12 01:34:47,922 INFO L226 Difference]: Without dead ends: 52831 [2022-07-12 01:34:47,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:47,956 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 477 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:47,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 614 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:34:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52831 states. [2022-07-12 01:34:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52831 to 52828. [2022-07-12 01:34:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52828 states, 52827 states have (on average 1.0782175781323944) internal successors, (56959), 52827 states have internal predecessors, (56959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52828 states to 52828 states and 56959 transitions. [2022-07-12 01:34:48,576 INFO L78 Accepts]: Start accepts. Automaton has 52828 states and 56959 transitions. Word has length 625 [2022-07-12 01:34:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:48,576 INFO L495 AbstractCegarLoop]: Abstraction has 52828 states and 56959 transitions. [2022-07-12 01:34:48,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 52828 states and 56959 transitions. [2022-07-12 01:34:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-07-12 01:34:48,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:48,594 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:34:48,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 01:34:48,594 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash 46869252, now seen corresponding path program 1 times [2022-07-12 01:34:48,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:48,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877954697] [2022-07-12 01:34:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:48,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-12 01:34:48,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:48,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877954697] [2022-07-12 01:34:48,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877954697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:48,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:48,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116548371] [2022-07-12 01:34:48,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:48,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:48,989 INFO L87 Difference]: Start difference. First operand 52828 states and 56959 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:51,627 INFO L93 Difference]: Finished difference Result 124839 states and 134597 transitions. [2022-07-12 01:34:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:51,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 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 637 [2022-07-12 01:34:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:51,703 INFO L225 Difference]: With dead ends: 124839 [2022-07-12 01:34:51,703 INFO L226 Difference]: Without dead ends: 72013 [2022-07-12 01:34:51,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:51,725 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 781 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:51,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 129 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:34:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72013 states. [2022-07-12 01:34:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72013 to 69877. [2022-07-12 01:34:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69877 states, 69876 states have (on average 1.0778521953174194) internal successors, (75316), 69876 states have internal predecessors, (75316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69877 states to 69877 states and 75316 transitions. [2022-07-12 01:34:52,673 INFO L78 Accepts]: Start accepts. Automaton has 69877 states and 75316 transitions. Word has length 637 [2022-07-12 01:34:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:52,674 INFO L495 AbstractCegarLoop]: Abstraction has 69877 states and 75316 transitions. [2022-07-12 01:34:52,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 69877 states and 75316 transitions. [2022-07-12 01:34:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-07-12 01:34:52,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:52,698 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:52,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 01:34:52,699 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash -792180794, now seen corresponding path program 1 times [2022-07-12 01:34:52,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:52,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266855920] [2022-07-12 01:34:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:52,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-12 01:34:52,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266855920] [2022-07-12 01:34:52,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266855920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:52,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:52,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:52,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289916428] [2022-07-12 01:34:52,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:52,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:52,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:52,925 INFO L87 Difference]: Start difference. First operand 69877 states and 75316 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:54,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:54,660 INFO L93 Difference]: Finished difference Result 145291 states and 156721 transitions. [2022-07-12 01:34:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:54,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 656 [2022-07-12 01:34:54,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:54,743 INFO L225 Difference]: With dead ends: 145291 [2022-07-12 01:34:54,743 INFO L226 Difference]: Without dead ends: 75416 [2022-07-12 01:34:54,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:54,780 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 360 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:54,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 231 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 01:34:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75416 states. [2022-07-12 01:34:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75416 to 75412. [2022-07-12 01:34:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75412 states, 75411 states have (on average 1.073981249419846) internal successors, (80990), 75411 states have internal predecessors, (80990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75412 states to 75412 states and 80990 transitions. [2022-07-12 01:34:55,646 INFO L78 Accepts]: Start accepts. Automaton has 75412 states and 80990 transitions. Word has length 656 [2022-07-12 01:34:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:55,646 INFO L495 AbstractCegarLoop]: Abstraction has 75412 states and 80990 transitions. [2022-07-12 01:34:55,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 75412 states and 80990 transitions. [2022-07-12 01:34:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-07-12 01:34:55,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:55,685 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:55,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 01:34:55,686 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -580776564, now seen corresponding path program 1 times [2022-07-12 01:34:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:55,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482576151] [2022-07-12 01:34:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-07-12 01:34:56,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:56,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482576151] [2022-07-12 01:34:56,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482576151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:56,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:56,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777662279] [2022-07-12 01:34:56,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:56,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:56,247 INFO L87 Difference]: Start difference. First operand 75412 states and 80990 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:58,149 INFO L93 Difference]: Finished difference Result 162774 states and 174842 transitions. [2022-07-12 01:34:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:58,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 744 [2022-07-12 01:34:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:58,242 INFO L225 Difference]: With dead ends: 162774 [2022-07-12 01:34:58,242 INFO L226 Difference]: Without dead ends: 87364 [2022-07-12 01:34:58,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:58,294 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 255 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:58,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 191 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87364 states. [2022-07-12 01:34:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87364 to 79676. [2022-07-12 01:34:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79676 states, 79675 states have (on average 1.0739253216190776) internal successors, (85565), 79675 states have internal predecessors, (85565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79676 states to 79676 states and 85565 transitions. [2022-07-12 01:34:59,561 INFO L78 Accepts]: Start accepts. Automaton has 79676 states and 85565 transitions. Word has length 744 [2022-07-12 01:34:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:59,561 INFO L495 AbstractCegarLoop]: Abstraction has 79676 states and 85565 transitions. [2022-07-12 01:34:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 79676 states and 85565 transitions. [2022-07-12 01:34:59,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2022-07-12 01:34:59,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:59,592 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2022-07-12 01:34:59,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 01:34:59,592 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1939600823, now seen corresponding path program 1 times [2022-07-12 01:34:59,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:59,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156924451] [2022-07-12 01:34:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:59,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-07-12 01:34:59,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:59,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156924451] [2022-07-12 01:34:59,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156924451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:59,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:59,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:59,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393804234] [2022-07-12 01:34:59,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:59,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:59,827 INFO L87 Difference]: Start difference. First operand 79676 states and 85565 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:01,703 INFO L93 Difference]: Finished difference Result 166604 states and 178965 transitions. [2022-07-12 01:35:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:35:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 762 [2022-07-12 01:35:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:01,797 INFO L225 Difference]: With dead ends: 166604 [2022-07-12 01:35:01,797 INFO L226 Difference]: Without dead ends: 86930 [2022-07-12 01:35:01,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:01,822 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 400 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:01,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 202 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:35:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86930 states. [2022-07-12 01:35:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86930 to 83088. [2022-07-12 01:35:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83088 states, 83087 states have (on average 1.0727791351234248) internal successors, (89134), 83087 states have internal predecessors, (89134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83088 states to 83088 states and 89134 transitions. [2022-07-12 01:35:02,809 INFO L78 Accepts]: Start accepts. Automaton has 83088 states and 89134 transitions. Word has length 762 [2022-07-12 01:35:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:02,809 INFO L495 AbstractCegarLoop]: Abstraction has 83088 states and 89134 transitions. [2022-07-12 01:35:02,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 83088 states and 89134 transitions. [2022-07-12 01:35:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2022-07-12 01:35:02,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:02,844 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-07-12 01:35:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 01:35:02,844 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1858694103, now seen corresponding path program 1 times [2022-07-12 01:35:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:02,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178935207] [2022-07-12 01:35:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 1032 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-07-12 01:35:03,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:03,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178935207] [2022-07-12 01:35:03,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178935207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:03,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:03,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:35:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668537281] [2022-07-12 01:35:03,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:03,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:35:03,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:03,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:35:03,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:03,130 INFO L87 Difference]: Start difference. First operand 83088 states and 89134 transitions. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:05,323 INFO L93 Difference]: Finished difference Result 170009 states and 182272 transitions. [2022-07-12 01:35:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:35:05,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 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 770 [2022-07-12 01:35:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:05,415 INFO L225 Difference]: With dead ends: 170009 [2022-07-12 01:35:05,415 INFO L226 Difference]: Without dead ends: 86923 [2022-07-12 01:35:05,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:05,462 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 295 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:05,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 235 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:35:05,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86923 states. [2022-07-12 01:35:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86923 to 82663. [2022-07-12 01:35:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82663 states, 82662 states have (on average 1.0720766494882776) internal successors, (88620), 82662 states have internal predecessors, (88620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82663 states to 82663 states and 88620 transitions. [2022-07-12 01:35:06,509 INFO L78 Accepts]: Start accepts. Automaton has 82663 states and 88620 transitions. Word has length 770 [2022-07-12 01:35:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:06,509 INFO L495 AbstractCegarLoop]: Abstraction has 82663 states and 88620 transitions. [2022-07-12 01:35:06,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 82663 states and 88620 transitions. [2022-07-12 01:35:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2022-07-12 01:35:06,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:06,541 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:35:06,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 01:35:06,541 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:06,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash 331354568, now seen corresponding path program 1 times [2022-07-12 01:35:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257362328] [2022-07-12 01:35:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:06,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 01:35:07,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:07,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257362328] [2022-07-12 01:35:07,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257362328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:07,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:07,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:35:07,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330560078] [2022-07-12 01:35:07,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:07,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:35:07,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:35:07,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:07,134 INFO L87 Difference]: Start difference. First operand 82663 states and 88620 transitions. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:09,005 INFO L93 Difference]: Finished difference Result 175557 states and 188049 transitions. [2022-07-12 01:35:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:35:09,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 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 788 [2022-07-12 01:35:09,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:09,106 INFO L225 Difference]: With dead ends: 175557 [2022-07-12 01:35:09,107 INFO L226 Difference]: Without dead ends: 92896 [2022-07-12 01:35:09,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:35:09,158 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 58 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:09,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 640 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:35:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92896 states. [2022-07-12 01:35:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92896 to 87332. [2022-07-12 01:35:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87332 states, 87331 states have (on average 1.0706736439523192) internal successors, (93503), 87331 states have internal predecessors, (93503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87332 states to 87332 states and 93503 transitions. [2022-07-12 01:35:10,705 INFO L78 Accepts]: Start accepts. Automaton has 87332 states and 93503 transitions. Word has length 788 [2022-07-12 01:35:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:10,706 INFO L495 AbstractCegarLoop]: Abstraction has 87332 states and 93503 transitions. [2022-07-12 01:35:10,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 87332 states and 93503 transitions. [2022-07-12 01:35:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-07-12 01:35:10,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:10,745 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:35:10,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 01:35:10,745 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1759449441, now seen corresponding path program 1 times [2022-07-12 01:35:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:10,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137320992] [2022-07-12 01:35:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:10,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 639 proven. 73 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-07-12 01:35:10,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:10,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137320992] [2022-07-12 01:35:10,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137320992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:35:10,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158633951] [2022-07-12 01:35:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:10,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:35:10,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:35:10,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:35:10,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:35:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:11,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 01:35:11,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:35:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 639 proven. 73 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-07-12 01:35:11,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:35:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-07-12 01:35:11,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158633951] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 01:35:11,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 01:35:11,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-12 01:35:11,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749107568] [2022-07-12 01:35:11,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:11,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:35:11,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:11,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:35:11,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:35:11,812 INFO L87 Difference]: Start difference. First operand 87332 states and 93503 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:14,608 INFO L93 Difference]: Finished difference Result 189581 states and 203267 transitions. [2022-07-12 01:35:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:35:14,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 811 [2022-07-12 01:35:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:14,728 INFO L225 Difference]: With dead ends: 189581 [2022-07-12 01:35:14,728 INFO L226 Difference]: Without dead ends: 102251 [2022-07-12 01:35:14,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1617 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:35:14,778 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 779 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:14,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 148 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:35:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102251 states. [2022-07-12 01:35:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102251 to 99274. [2022-07-12 01:35:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99274 states, 99273 states have (on average 1.0730007151995005) internal successors, (106520), 99273 states have internal predecessors, (106520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99274 states to 99274 states and 106520 transitions. [2022-07-12 01:35:16,022 INFO L78 Accepts]: Start accepts. Automaton has 99274 states and 106520 transitions. Word has length 811 [2022-07-12 01:35:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:16,023 INFO L495 AbstractCegarLoop]: Abstraction has 99274 states and 106520 transitions. [2022-07-12 01:35:16,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 99274 states and 106520 transitions. [2022-07-12 01:35:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2022-07-12 01:35:16,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:16,063 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:35:16,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:35:16,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 01:35:16,274 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:16,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1107197470, now seen corresponding path program 1 times [2022-07-12 01:35:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:16,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619968555] [2022-07-12 01:35:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1464 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-07-12 01:35:16,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:16,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619968555] [2022-07-12 01:35:16,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619968555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:16,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:16,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:35:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632123363] [2022-07-12 01:35:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:35:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:35:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:35:16,950 INFO L87 Difference]: Start difference. First operand 99274 states and 106520 transitions. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:19,514 INFO L93 Difference]: Finished difference Result 206668 states and 221493 transitions. [2022-07-12 01:35:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:35:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 909 [2022-07-12 01:35:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:19,634 INFO L225 Difference]: With dead ends: 206668 [2022-07-12 01:35:19,634 INFO L226 Difference]: Without dead ends: 107396 [2022-07-12 01:35:19,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:35:19,947 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 757 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:19,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 216 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:35:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107396 states. [2022-07-12 01:35:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107396 to 94154. [2022-07-12 01:35:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94154 states, 94153 states have (on average 1.0697375548309667) internal successors, (100719), 94153 states have internal predecessors, (100719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94154 states to 94154 states and 100719 transitions. [2022-07-12 01:35:21,048 INFO L78 Accepts]: Start accepts. Automaton has 94154 states and 100719 transitions. Word has length 909 [2022-07-12 01:35:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:35:21,049 INFO L495 AbstractCegarLoop]: Abstraction has 94154 states and 100719 transitions. [2022-07-12 01:35:21,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 94154 states and 100719 transitions. [2022-07-12 01:35:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2022-07-12 01:35:21,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:35:21,097 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:35:21,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 01:35:21,098 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:35:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:35:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1016245605, now seen corresponding path program 1 times [2022-07-12 01:35:21,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:35:21,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990799712] [2022-07-12 01:35:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:35:21,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:35:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:35:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 1482 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2022-07-12 01:35:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:35:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990799712] [2022-07-12 01:35:21,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990799712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:35:21,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:35:21,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:35:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354430098] [2022-07-12 01:35:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:35:21,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:35:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:35:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:35:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:35:21,401 INFO L87 Difference]: Start difference. First operand 94154 states and 100719 transitions. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:35:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:35:23,971 INFO L93 Difference]: Finished difference Result 198560 states and 212088 transitions. [2022-07-12 01:35:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:35:23,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 915 [2022-07-12 01:35:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:35:24,090 INFO L225 Difference]: With dead ends: 198560 [2022-07-12 01:35:24,090 INFO L226 Difference]: Without dead ends: 104408 [2022-07-12 01:35:24,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:35:24,140 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 755 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:35:24,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 216 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 01:35:24,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104408 states.