./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3fb71e8e4e407700549b8952f3afdeeffa0973a11e08bb7f18bca04e4b75e49d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:36:02,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:36:02,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:36:02,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:36:02,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:36:02,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:36:02,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:36:02,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:36:02,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:36:02,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:36:02,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:36:02,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:36:02,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:36:02,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:36:02,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:36:02,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:36:02,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:36:02,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:36:02,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:36:02,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:36:02,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:36:02,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:36:02,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:36:02,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:36:02,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:36:02,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:36:02,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:36:02,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:36:02,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:36:02,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:36:02,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:36:02,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:36:02,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:36:02,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:36:02,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:36:02,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:36:02,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:36:02,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:36:02,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:36:02,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:36:02,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:36:02,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:36:02,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:36:02,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:36:02,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:36:02,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:36:02,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:36:02,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:36:02,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:36:02,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:36:02,839 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:36:02,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:36:02,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:36:02,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:36:02,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:36:02,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:36:02,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:36:02,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:36:02,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:36:02,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:36:02,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:36:02,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:36:02,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:36:02,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:36:02,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:36:02,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:36:02,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:36:02,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:36:02,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:36:02,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:36:02,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:36:02,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:36:02,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:36:02,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:36:02,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:36:02,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:36:02,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fb71e8e4e407700549b8952f3afdeeffa0973a11e08bb7f18bca04e4b75e49d [2021-12-16 01:36:03,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:36:03,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:36:03,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:36:03,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:36:03,050 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:36:03,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-16 01:36:03,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf708bca/7999394291f64aa884852c911d4b0f3f/FLAG55cc83367 [2021-12-16 01:36:03,588 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:36:03,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-16 01:36:03,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf708bca/7999394291f64aa884852c911d4b0f3f/FLAG55cc83367 [2021-12-16 01:36:03,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf708bca/7999394291f64aa884852c911d4b0f3f [2021-12-16 01:36:03,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:36:03,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:36:03,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:36:03,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:36:03,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:36:03,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:36:03" (1/1) ... [2021-12-16 01:36:03,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71fd144b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:03, skipping insertion in model container [2021-12-16 01:36:03,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:36:03" (1/1) ... [2021-12-16 01:36:03,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:36:03,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:36:03,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2021-12-16 01:36:04,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:36:04,060 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:36:04,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2021-12-16 01:36:04,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:36:04,175 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:36:04,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04 WrapperNode [2021-12-16 01:36:04,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:36:04,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:36:04,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:36:04,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:36:04,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,242 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 830 [2021-12-16 01:36:04,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:36:04,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:36:04,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:36:04,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:36:04,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:36:04,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:36:04,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:36:04,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:36:04,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (1/1) ... [2021-12-16 01:36:04,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:36:04,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:36:04,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 01:36:04,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 01:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:36:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:36:04,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:36:04,469 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:36:04,470 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:36:05,142 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:36:05,152 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:36:05,152 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 01:36:05,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:36:05 BoogieIcfgContainer [2021-12-16 01:36:05,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:36:05,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:36:05,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:36:05,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:36:05,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:36:03" (1/3) ... [2021-12-16 01:36:05,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de82fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:36:05, skipping insertion in model container [2021-12-16 01:36:05,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:36:04" (2/3) ... [2021-12-16 01:36:05,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de82fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:36:05, skipping insertion in model container [2021-12-16 01:36:05,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:36:05" (3/3) ... [2021-12-16 01:36:05,161 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-16 01:36:05,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:36:05,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:36:05,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:36:05,210 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 01:36:05,210 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:36:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 01:36:05,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:05,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:05,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:05,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1361095482, now seen corresponding path program 1 times [2021-12-16 01:36:05,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:05,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15186229] [2021-12-16 01:36:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:05,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:05,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:05,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15186229] [2021-12-16 01:36:05,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15186229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:05,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:05,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:05,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613298519] [2021-12-16 01:36:05,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:05,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:05,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:05,714 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 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 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:06,325 INFO L93 Difference]: Finished difference Result 1440 states and 2328 transitions. [2021-12-16 01:36:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:36:06,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-12-16 01:36:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:06,344 INFO L225 Difference]: With dead ends: 1440 [2021-12-16 01:36:06,344 INFO L226 Difference]: Without dead ends: 1332 [2021-12-16 01:36:06,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-16 01:36:06,350 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 2817 mSDsluCounter, 4939 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 5703 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:06,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 5703 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:36:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-12-16 01:36:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 303. [2021-12-16 01:36:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4503311258278146) internal successors, (438), 302 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 438 transitions. [2021-12-16 01:36:06,422 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 438 transitions. Word has length 107 [2021-12-16 01:36:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:06,422 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 438 transitions. [2021-12-16 01:36:06,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 438 transitions. [2021-12-16 01:36:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:06,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:06,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:06,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:36:06,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:06,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1847794712, now seen corresponding path program 1 times [2021-12-16 01:36:06,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:06,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564884776] [2021-12-16 01:36:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:06,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:06,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:06,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564884776] [2021-12-16 01:36:06,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564884776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:06,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:06,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:06,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690275352] [2021-12-16 01:36:06,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:06,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:06,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:06,686 INFO L87 Difference]: Start difference. First operand 303 states and 438 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:07,028 INFO L93 Difference]: Finished difference Result 1559 states and 2435 transitions. [2021-12-16 01:36:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:07,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:07,035 INFO L225 Difference]: With dead ends: 1559 [2021-12-16 01:36:07,035 INFO L226 Difference]: Without dead ends: 1399 [2021-12-16 01:36:07,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:36:07,041 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1952 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:07,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1952 Valid, 2827 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:36:07,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2021-12-16 01:36:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 482. [2021-12-16 01:36:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5051975051975053) internal successors, (724), 481 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 724 transitions. [2021-12-16 01:36:07,094 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 724 transitions. Word has length 109 [2021-12-16 01:36:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:07,096 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 724 transitions. [2021-12-16 01:36:07,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 724 transitions. [2021-12-16 01:36:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:07,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:07,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:07,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:36:07,108 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2013134268, now seen corresponding path program 1 times [2021-12-16 01:36:07,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:07,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772791670] [2021-12-16 01:36:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:07,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:07,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:07,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772791670] [2021-12-16 01:36:07,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772791670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:07,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:07,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:07,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922073711] [2021-12-16 01:36:07,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:07,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:07,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:07,244 INFO L87 Difference]: Start difference. First operand 482 states and 724 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:07,538 INFO L93 Difference]: Finished difference Result 1738 states and 2721 transitions. [2021-12-16 01:36:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:07,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:07,546 INFO L225 Difference]: With dead ends: 1738 [2021-12-16 01:36:07,546 INFO L226 Difference]: Without dead ends: 1578 [2021-12-16 01:36:07,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:36:07,548 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 2232 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:07,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 2473 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-12-16 01:36:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 735. [2021-12-16 01:36:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 1.5367847411444142) internal successors, (1128), 734 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1128 transitions. [2021-12-16 01:36:07,629 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1128 transitions. Word has length 109 [2021-12-16 01:36:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:07,629 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1128 transitions. [2021-12-16 01:36:07,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1128 transitions. [2021-12-16 01:36:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:07,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:07,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:07,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:36:07,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:07,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1500386704, now seen corresponding path program 1 times [2021-12-16 01:36:07,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:07,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656513918] [2021-12-16 01:36:07,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:07,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:07,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:07,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656513918] [2021-12-16 01:36:07,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656513918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:07,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:07,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:07,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287587804] [2021-12-16 01:36:07,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:07,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:07,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:07,786 INFO L87 Difference]: Start difference. First operand 735 states and 1128 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:08,100 INFO L93 Difference]: Finished difference Result 1907 states and 2991 transitions. [2021-12-16 01:36:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:08,108 INFO L225 Difference]: With dead ends: 1907 [2021-12-16 01:36:08,108 INFO L226 Difference]: Without dead ends: 1747 [2021-12-16 01:36:08,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:36:08,118 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 2406 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:08,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 2320 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2021-12-16 01:36:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 899. [2021-12-16 01:36:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.5478841870824054) internal successors, (1390), 898 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1390 transitions. [2021-12-16 01:36:08,191 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1390 transitions. Word has length 109 [2021-12-16 01:36:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:08,191 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1390 transitions. [2021-12-16 01:36:08,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1390 transitions. [2021-12-16 01:36:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:08,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:08,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:08,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:36:08,198 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:08,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2131359206, now seen corresponding path program 1 times [2021-12-16 01:36:08,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:08,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197184279] [2021-12-16 01:36:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:08,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:08,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:08,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197184279] [2021-12-16 01:36:08,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197184279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:08,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:08,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:08,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12204714] [2021-12-16 01:36:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:08,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:08,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:08,350 INFO L87 Difference]: Start difference. First operand 899 states and 1390 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:08,641 INFO L93 Difference]: Finished difference Result 2066 states and 3245 transitions. [2021-12-16 01:36:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:08,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:08,649 INFO L225 Difference]: With dead ends: 2066 [2021-12-16 01:36:08,649 INFO L226 Difference]: Without dead ends: 1906 [2021-12-16 01:36:08,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:36:08,660 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 2914 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:08,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 2206 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-12-16 01:36:08,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1058. [2021-12-16 01:36:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1057 states have (on average 1.555345316934721) internal successors, (1644), 1057 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1644 transitions. [2021-12-16 01:36:08,733 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1644 transitions. Word has length 109 [2021-12-16 01:36:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:08,733 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1644 transitions. [2021-12-16 01:36:08,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1644 transitions. [2021-12-16 01:36:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:08,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:08,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:08,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:36:08,735 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash -983368864, now seen corresponding path program 1 times [2021-12-16 01:36:08,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:08,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528160893] [2021-12-16 01:36:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:08,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:08,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:08,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528160893] [2021-12-16 01:36:08,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528160893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:08,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:08,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:36:08,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619181073] [2021-12-16 01:36:08,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:08,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:36:08,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:08,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:36:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:36:08,789 INFO L87 Difference]: Start difference. First operand 1058 states and 1644 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:08,957 INFO L93 Difference]: Finished difference Result 2729 states and 4305 transitions. [2021-12-16 01:36:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:36:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:08,964 INFO L225 Difference]: With dead ends: 2729 [2021-12-16 01:36:08,964 INFO L226 Difference]: Without dead ends: 1858 [2021-12-16 01:36:08,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:36:08,967 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 115 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:08,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 637 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:36:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-12-16 01:36:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1834. [2021-12-16 01:36:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.55810147299509) internal successors, (2856), 1833 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2856 transitions. [2021-12-16 01:36:09,118 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2856 transitions. Word has length 109 [2021-12-16 01:36:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:09,118 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2856 transitions. [2021-12-16 01:36:09,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2856 transitions. [2021-12-16 01:36:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:09,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:09,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:09,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:36:09,120 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash -739291201, now seen corresponding path program 1 times [2021-12-16 01:36:09,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:09,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046410020] [2021-12-16 01:36:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:09,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:09,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:09,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046410020] [2021-12-16 01:36:09,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046410020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:09,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:09,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:09,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694306061] [2021-12-16 01:36:09,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:09,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:09,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:09,357 INFO L87 Difference]: Start difference. First operand 1834 states and 2856 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:09,786 INFO L93 Difference]: Finished difference Result 3483 states and 5462 transitions. [2021-12-16 01:36:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:09,793 INFO L225 Difference]: With dead ends: 3483 [2021-12-16 01:36:09,793 INFO L226 Difference]: Without dead ends: 1836 [2021-12-16 01:36:09,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-16 01:36:09,799 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 672 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:09,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1496 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-12-16 01:36:09,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1834. [2021-12-16 01:36:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.5548281505728314) internal successors, (2850), 1833 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2850 transitions. [2021-12-16 01:36:09,946 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2850 transitions. Word has length 109 [2021-12-16 01:36:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:09,946 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2850 transitions. [2021-12-16 01:36:09,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2850 transitions. [2021-12-16 01:36:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:09,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:09,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:09,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:36:09,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:09,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash 307798176, now seen corresponding path program 1 times [2021-12-16 01:36:09,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:09,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324323586] [2021-12-16 01:36:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:09,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:10,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:10,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324323586] [2021-12-16 01:36:10,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324323586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:10,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:10,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:10,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470341472] [2021-12-16 01:36:10,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:10,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:10,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:10,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:10,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:10,057 INFO L87 Difference]: Start difference. First operand 1834 states and 2850 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:10,520 INFO L93 Difference]: Finished difference Result 3987 states and 6244 transitions. [2021-12-16 01:36:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:10,534 INFO L225 Difference]: With dead ends: 3987 [2021-12-16 01:36:10,534 INFO L226 Difference]: Without dead ends: 3686 [2021-12-16 01:36:10,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:36:10,537 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 2209 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:10,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2209 Valid, 2500 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2021-12-16 01:36:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 2133. [2021-12-16 01:36:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 1.5581613508442778) internal successors, (3322), 2132 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3322 transitions. [2021-12-16 01:36:10,730 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3322 transitions. Word has length 109 [2021-12-16 01:36:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:10,730 INFO L470 AbstractCegarLoop]: Abstraction has 2133 states and 3322 transitions. [2021-12-16 01:36:10,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3322 transitions. [2021-12-16 01:36:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:10,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:10,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:10,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:36:10,732 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:10,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2133931794, now seen corresponding path program 1 times [2021-12-16 01:36:10,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:10,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826246804] [2021-12-16 01:36:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:10,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:10,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:10,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826246804] [2021-12-16 01:36:10,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826246804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:10,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:10,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:10,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226664883] [2021-12-16 01:36:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:10,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:10,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:10,834 INFO L87 Difference]: Start difference. First operand 2133 states and 3322 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:11,307 INFO L93 Difference]: Finished difference Result 4292 states and 6725 transitions. [2021-12-16 01:36:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:11,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:11,323 INFO L225 Difference]: With dead ends: 4292 [2021-12-16 01:36:11,323 INFO L226 Difference]: Without dead ends: 3991 [2021-12-16 01:36:11,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:36:11,327 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 2157 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:11,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2157 Valid, 3130 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2021-12-16 01:36:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 2443. [2021-12-16 01:36:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2442 states have (on average 1.5606060606060606) internal successors, (3811), 2442 states have internal predecessors, (3811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3811 transitions. [2021-12-16 01:36:11,541 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3811 transitions. Word has length 109 [2021-12-16 01:36:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:11,542 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 3811 transitions. [2021-12-16 01:36:11,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3811 transitions. [2021-12-16 01:36:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 01:36:11,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:11,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:11,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:36:11,544 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash 763996610, now seen corresponding path program 1 times [2021-12-16 01:36:11,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:11,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070825527] [2021-12-16 01:36:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:11,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:11,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:11,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070825527] [2021-12-16 01:36:11,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070825527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:11,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:11,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:11,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646810091] [2021-12-16 01:36:11,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:11,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:11,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:11,647 INFO L87 Difference]: Start difference. First operand 2443 states and 3811 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:12,221 INFO L93 Difference]: Finished difference Result 4607 states and 7222 transitions. [2021-12-16 01:36:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:36:12,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-16 01:36:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:12,244 INFO L225 Difference]: With dead ends: 4607 [2021-12-16 01:36:12,245 INFO L226 Difference]: Without dead ends: 4306 [2021-12-16 01:36:12,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:36:12,247 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 2330 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:12,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2330 Valid, 3291 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:36:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-12-16 01:36:12,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 2763. [2021-12-16 01:36:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.562635771180304) internal successors, (4316), 2762 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4316 transitions. [2021-12-16 01:36:12,501 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4316 transitions. Word has length 109 [2021-12-16 01:36:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:12,501 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 4316 transitions. [2021-12-16 01:36:12,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:12,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4316 transitions. [2021-12-16 01:36:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-16 01:36:12,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:12,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:12,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:36:12,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash -186015446, now seen corresponding path program 1 times [2021-12-16 01:36:12,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:12,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491638625] [2021-12-16 01:36:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:12,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:12,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:12,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491638625] [2021-12-16 01:36:12,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491638625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:12,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:12,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:36:12,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396848815] [2021-12-16 01:36:12,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:12,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:36:12,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:36:12,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:36:12,583 INFO L87 Difference]: Start difference. First operand 2763 states and 4316 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:12,922 INFO L93 Difference]: Finished difference Result 5454 states and 8555 transitions. [2021-12-16 01:36:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:36:12,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-16 01:36:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:12,938 INFO L225 Difference]: With dead ends: 5454 [2021-12-16 01:36:12,938 INFO L226 Difference]: Without dead ends: 2763 [2021-12-16 01:36:12,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:36:12,942 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 695 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:12,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 182 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2021-12-16 01:36:13,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2021-12-16 01:36:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.5499637943519189) internal successors, (4281), 2762 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4281 transitions. [2021-12-16 01:36:13,172 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4281 transitions. Word has length 110 [2021-12-16 01:36:13,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:13,172 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 4281 transitions. [2021-12-16 01:36:13,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:13,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4281 transitions. [2021-12-16 01:36:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:36:13,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:13,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:13,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:36:13,175 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:13,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash -834698966, now seen corresponding path program 1 times [2021-12-16 01:36:13,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:13,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965621928] [2021-12-16 01:36:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:13,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:13,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:13,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965621928] [2021-12-16 01:36:13,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965621928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:13,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:13,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:36:13,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416021448] [2021-12-16 01:36:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:13,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:36:13,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:36:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:36:13,246 INFO L87 Difference]: Start difference. First operand 2763 states and 4281 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:13,623 INFO L93 Difference]: Finished difference Result 5458 states and 8490 transitions. [2021-12-16 01:36:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:36:13,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-12-16 01:36:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:13,629 INFO L225 Difference]: With dead ends: 5458 [2021-12-16 01:36:13,630 INFO L226 Difference]: Without dead ends: 2763 [2021-12-16 01:36:13,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:36:13,634 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 700 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:13,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 174 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2021-12-16 01:36:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2021-12-16 01:36:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.5372918175235337) internal successors, (4246), 2762 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4246 transitions. [2021-12-16 01:36:13,881 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4246 transitions. Word has length 111 [2021-12-16 01:36:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:13,882 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 4246 transitions. [2021-12-16 01:36:13,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4246 transitions. [2021-12-16 01:36:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-16 01:36:13,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:13,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:13,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:36:13,884 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:13,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:13,885 INFO L85 PathProgramCache]: Analyzing trace with hash -792673098, now seen corresponding path program 1 times [2021-12-16 01:36:13,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:13,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310590096] [2021-12-16 01:36:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:13,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:13,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:13,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310590096] [2021-12-16 01:36:13,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310590096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:13,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:13,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:36:13,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803514639] [2021-12-16 01:36:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:13,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:36:13,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:36:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:36:13,946 INFO L87 Difference]: Start difference. First operand 2763 states and 4246 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:14,560 INFO L93 Difference]: Finished difference Result 8111 states and 12533 transitions. [2021-12-16 01:36:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:36:14,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-12-16 01:36:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:14,572 INFO L225 Difference]: With dead ends: 8111 [2021-12-16 01:36:14,572 INFO L226 Difference]: Without dead ends: 5404 [2021-12-16 01:36:14,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:36:14,575 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1057 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:14,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 239 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:36:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-12-16 01:36:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5402. [2021-12-16 01:36:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.5382336604332532) internal successors, (8308), 5401 states have internal predecessors, (8308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8308 transitions. [2021-12-16 01:36:14,981 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8308 transitions. Word has length 112 [2021-12-16 01:36:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:14,982 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8308 transitions. [2021-12-16 01:36:14,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8308 transitions. [2021-12-16 01:36:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:36:14,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:14,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:14,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:36:14,985 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:14,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1426604874, now seen corresponding path program 1 times [2021-12-16 01:36:14,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:14,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922501449] [2021-12-16 01:36:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:14,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:15,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:15,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922501449] [2021-12-16 01:36:15,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922501449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:15,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:15,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:36:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171832850] [2021-12-16 01:36:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:15,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:36:15,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:15,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:36:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:36:15,066 INFO L87 Difference]: Start difference. First operand 5402 states and 8308 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:15,660 INFO L93 Difference]: Finished difference Result 10728 states and 16537 transitions. [2021-12-16 01:36:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:36:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-12-16 01:36:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:15,671 INFO L225 Difference]: With dead ends: 10728 [2021-12-16 01:36:15,671 INFO L226 Difference]: Without dead ends: 5402 [2021-12-16 01:36:15,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:36:15,678 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 666 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:15,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 190 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-12-16 01:36:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-12-16 01:36:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.525458248472505) internal successors, (8239), 5401 states have internal predecessors, (8239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8239 transitions. [2021-12-16 01:36:16,141 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8239 transitions. Word has length 113 [2021-12-16 01:36:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:16,141 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8239 transitions. [2021-12-16 01:36:16,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8239 transitions. [2021-12-16 01:36:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-16 01:36:16,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:16,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:36:16,144 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash 167247378, now seen corresponding path program 1 times [2021-12-16 01:36:16,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:16,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197803104] [2021-12-16 01:36:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:16,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:16,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:16,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197803104] [2021-12-16 01:36:16,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197803104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:16,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:16,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:36:16,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110531087] [2021-12-16 01:36:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:16,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:36:16,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:36:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:36:16,203 INFO L87 Difference]: Start difference. First operand 5402 states and 8239 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:16,737 INFO L93 Difference]: Finished difference Result 10744 states and 16417 transitions. [2021-12-16 01:36:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:36:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-12-16 01:36:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:16,748 INFO L225 Difference]: With dead ends: 10744 [2021-12-16 01:36:16,748 INFO L226 Difference]: Without dead ends: 5402 [2021-12-16 01:36:16,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:36:16,757 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 706 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:16,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 158 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-12-16 01:36:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-12-16 01:36:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.512682836511757) internal successors, (8170), 5401 states have internal predecessors, (8170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8170 transitions. [2021-12-16 01:36:17,201 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8170 transitions. Word has length 114 [2021-12-16 01:36:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:17,201 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8170 transitions. [2021-12-16 01:36:17,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8170 transitions. [2021-12-16 01:36:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-16 01:36:17,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:17,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:17,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:36:17,204 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2005366114, now seen corresponding path program 1 times [2021-12-16 01:36:17,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:17,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55688374] [2021-12-16 01:36:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:17,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:17,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:17,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55688374] [2021-12-16 01:36:17,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55688374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:17,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:17,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:36:17,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736453174] [2021-12-16 01:36:17,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:17,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:36:17,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:17,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:36:17,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:36:17,275 INFO L87 Difference]: Start difference. First operand 5402 states and 8170 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:17,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:17,855 INFO L93 Difference]: Finished difference Result 10740 states and 16275 transitions. [2021-12-16 01:36:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:36:17,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-12-16 01:36:17,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:17,866 INFO L225 Difference]: With dead ends: 10740 [2021-12-16 01:36:17,867 INFO L226 Difference]: Without dead ends: 5402 [2021-12-16 01:36:17,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:36:17,875 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 688 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:17,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 166 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-12-16 01:36:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-12-16 01:36:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.4999074245510091) internal successors, (8101), 5401 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8101 transitions. [2021-12-16 01:36:18,430 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8101 transitions. Word has length 115 [2021-12-16 01:36:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:18,431 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8101 transitions. [2021-12-16 01:36:18,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8101 transitions. [2021-12-16 01:36:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 01:36:18,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:18,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:18,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:36:18,433 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:18,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1060263686, now seen corresponding path program 1 times [2021-12-16 01:36:18,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:18,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395616838] [2021-12-16 01:36:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:18,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:18,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:18,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395616838] [2021-12-16 01:36:18,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395616838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:18,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:18,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:36:18,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596952189] [2021-12-16 01:36:18,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:18,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:36:18,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:18,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:36:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:36:18,497 INFO L87 Difference]: Start difference. First operand 5402 states and 8101 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:19,000 INFO L93 Difference]: Finished difference Result 10724 states and 16121 transitions. [2021-12-16 01:36:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:36:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-12-16 01:36:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:19,009 INFO L225 Difference]: With dead ends: 10724 [2021-12-16 01:36:19,009 INFO L226 Difference]: Without dead ends: 5402 [2021-12-16 01:36:19,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:36:19,018 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 637 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:19,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 202 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:36:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-12-16 01:36:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5402. [2021-12-16 01:36:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.487132012590261) internal successors, (8032), 5401 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8032 transitions. [2021-12-16 01:36:19,459 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8032 transitions. Word has length 116 [2021-12-16 01:36:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:19,459 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8032 transitions. [2021-12-16 01:36:19,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8032 transitions. [2021-12-16 01:36:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 01:36:19,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:19,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:19,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 01:36:19,462 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 695724750, now seen corresponding path program 1 times [2021-12-16 01:36:19,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:19,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559422788] [2021-12-16 01:36:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:19,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:19,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559422788] [2021-12-16 01:36:19,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559422788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:19,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:19,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 01:36:19,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216668265] [2021-12-16 01:36:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:19,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 01:36:19,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 01:36:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-16 01:36:19,700 INFO L87 Difference]: Start difference. First operand 5402 states and 8032 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:21,159 INFO L93 Difference]: Finished difference Result 13423 states and 19928 transitions. [2021-12-16 01:36:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:36:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-12-16 01:36:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:21,170 INFO L225 Difference]: With dead ends: 13423 [2021-12-16 01:36:21,170 INFO L226 Difference]: Without dead ends: 8179 [2021-12-16 01:36:21,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-16 01:36:21,178 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1833 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:21,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 779 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 01:36:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8179 states. [2021-12-16 01:36:21,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8179 to 5402. [2021-12-16 01:36:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.4865765598963154) internal successors, (8029), 5401 states have internal predecessors, (8029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8029 transitions. [2021-12-16 01:36:21,808 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8029 transitions. Word has length 117 [2021-12-16 01:36:21,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:21,808 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8029 transitions. [2021-12-16 01:36:21,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8029 transitions. [2021-12-16 01:36:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 01:36:21,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:21,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:21,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 01:36:21,810 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1923786292, now seen corresponding path program 1 times [2021-12-16 01:36:21,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:21,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068810453] [2021-12-16 01:36:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:21,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:21,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068810453] [2021-12-16 01:36:21,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068810453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:21,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:21,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:21,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102104923] [2021-12-16 01:36:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:21,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:36:21,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:36:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:36:21,994 INFO L87 Difference]: Start difference. First operand 5402 states and 8029 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 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) [2021-12-16 01:36:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:23,625 INFO L93 Difference]: Finished difference Result 15891 states and 23613 transitions. [2021-12-16 01:36:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:36:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 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 118 [2021-12-16 01:36:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:23,637 INFO L225 Difference]: With dead ends: 15891 [2021-12-16 01:36:23,637 INFO L226 Difference]: Without dead ends: 10737 [2021-12-16 01:36:23,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:36:23,643 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1286 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:23,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 524 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:36:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10737 states. [2021-12-16 01:36:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10737 to 5402. [2021-12-16 01:36:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.484539900018515) internal successors, (8018), 5401 states have internal predecessors, (8018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8018 transitions. [2021-12-16 01:36:24,167 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8018 transitions. Word has length 118 [2021-12-16 01:36:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:24,167 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8018 transitions. [2021-12-16 01:36:24,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 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) [2021-12-16 01:36:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8018 transitions. [2021-12-16 01:36:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 01:36:24,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:24,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:24,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 01:36:24,170 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash 483163380, now seen corresponding path program 1 times [2021-12-16 01:36:24,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:24,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780571699] [2021-12-16 01:36:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:24,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:24,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780571699] [2021-12-16 01:36:24,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780571699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:24,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:24,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 01:36:24,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309439729] [2021-12-16 01:36:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:24,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:36:24,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:24,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:36:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:36:24,354 INFO L87 Difference]: Start difference. First operand 5402 states and 8018 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 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) [2021-12-16 01:36:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:25,685 INFO L93 Difference]: Finished difference Result 15671 states and 23337 transitions. [2021-12-16 01:36:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:36:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 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 118 [2021-12-16 01:36:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:25,696 INFO L225 Difference]: With dead ends: 15671 [2021-12-16 01:36:25,696 INFO L226 Difference]: Without dead ends: 10488 [2021-12-16 01:36:25,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:36:25,700 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 1186 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:25,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 462 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:36:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10488 states. [2021-12-16 01:36:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10488 to 5402. [2021-12-16 01:36:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.4843547491205333) internal successors, (8017), 5401 states have internal predecessors, (8017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8017 transitions. [2021-12-16 01:36:26,260 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8017 transitions. Word has length 118 [2021-12-16 01:36:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:26,260 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8017 transitions. [2021-12-16 01:36:26,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 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) [2021-12-16 01:36:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8017 transitions. [2021-12-16 01:36:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-16 01:36:26,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:26,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:26,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 01:36:26,263 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash -26080566, now seen corresponding path program 1 times [2021-12-16 01:36:26,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:26,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454846599] [2021-12-16 01:36:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:26,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:26,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454846599] [2021-12-16 01:36:26,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454846599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:26,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:26,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:26,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803246808] [2021-12-16 01:36:26,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:26,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:36:26,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:26,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:36:26,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:36:26,453 INFO L87 Difference]: Start difference. First operand 5402 states and 8017 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:28,487 INFO L93 Difference]: Finished difference Result 16011 states and 23775 transitions. [2021-12-16 01:36:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:36:28,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-12-16 01:36:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:28,503 INFO L225 Difference]: With dead ends: 16011 [2021-12-16 01:36:28,503 INFO L226 Difference]: Without dead ends: 10782 [2021-12-16 01:36:28,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:36:28,512 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1374 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:28,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 753 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 01:36:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10782 states. [2021-12-16 01:36:29,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10782 to 5402. [2021-12-16 01:36:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.483243843732642) internal successors, (8011), 5401 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8011 transitions. [2021-12-16 01:36:29,137 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8011 transitions. Word has length 119 [2021-12-16 01:36:29,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:29,137 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8011 transitions. [2021-12-16 01:36:29,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:29,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8011 transitions. [2021-12-16 01:36:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 01:36:29,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:29,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:29,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 01:36:29,140 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash 611422821, now seen corresponding path program 1 times [2021-12-16 01:36:29,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:29,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966143165] [2021-12-16 01:36:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:29,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:29,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:29,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966143165] [2021-12-16 01:36:29,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966143165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:29,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:29,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:29,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418137657] [2021-12-16 01:36:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:29,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:36:29,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:36:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:36:29,291 INFO L87 Difference]: Start difference. First operand 5402 states and 8011 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:32,209 INFO L93 Difference]: Finished difference Result 25167 states and 37184 transitions. [2021-12-16 01:36:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 01:36:32,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2021-12-16 01:36:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:32,234 INFO L225 Difference]: With dead ends: 25167 [2021-12-16 01:36:32,234 INFO L226 Difference]: Without dead ends: 20081 [2021-12-16 01:36:32,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-12-16 01:36:32,242 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1796 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:32,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 600 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:36:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20081 states. [2021-12-16 01:36:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20081 to 5447. [2021-12-16 01:36:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5447 states, 5446 states have (on average 1.4820051413881747) internal successors, (8071), 5446 states have internal predecessors, (8071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 8071 transitions. [2021-12-16 01:36:33,054 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 8071 transitions. Word has length 120 [2021-12-16 01:36:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:33,054 INFO L470 AbstractCegarLoop]: Abstraction has 5447 states and 8071 transitions. [2021-12-16 01:36:33,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 8071 transitions. [2021-12-16 01:36:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 01:36:33,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:33,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:33,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 01:36:33,057 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1216460055, now seen corresponding path program 1 times [2021-12-16 01:36:33,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:33,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490528716] [2021-12-16 01:36:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:33,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:33,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:33,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490528716] [2021-12-16 01:36:33,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490528716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:33,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:33,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:33,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622353227] [2021-12-16 01:36:33,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:33,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:36:33,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:36:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:36:33,251 INFO L87 Difference]: Start difference. First operand 5447 states and 8071 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:35,292 INFO L93 Difference]: Finished difference Result 16089 states and 23861 transitions. [2021-12-16 01:36:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:36:35,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-12-16 01:36:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:35,304 INFO L225 Difference]: With dead ends: 16089 [2021-12-16 01:36:35,304 INFO L226 Difference]: Without dead ends: 10851 [2021-12-16 01:36:35,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:36:35,310 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1849 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:35,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 590 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:36:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2021-12-16 01:36:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 5447. [2021-12-16 01:36:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5447 states, 5446 states have (on average 1.4803525523319867) internal successors, (8062), 5446 states have internal predecessors, (8062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 8062 transitions. [2021-12-16 01:36:36,070 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 8062 transitions. Word has length 121 [2021-12-16 01:36:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:36,071 INFO L470 AbstractCegarLoop]: Abstraction has 5447 states and 8062 transitions. [2021-12-16 01:36:36,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 8062 transitions. [2021-12-16 01:36:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 01:36:36,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:36,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:36,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 01:36:36,075 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1258002084, now seen corresponding path program 1 times [2021-12-16 01:36:36,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:36,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52470567] [2021-12-16 01:36:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:36,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:36,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52470567] [2021-12-16 01:36:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52470567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:36,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:36,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:36:36,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471907221] [2021-12-16 01:36:36,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:36,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:36:36,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:36:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:36:36,244 INFO L87 Difference]: Start difference. First operand 5447 states and 8062 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:38,290 INFO L93 Difference]: Finished difference Result 15914 states and 23590 transitions. [2021-12-16 01:36:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:36:38,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-12-16 01:36:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:38,302 INFO L225 Difference]: With dead ends: 15914 [2021-12-16 01:36:38,302 INFO L226 Difference]: Without dead ends: 10776 [2021-12-16 01:36:38,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:36:38,307 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1594 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:38,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 725 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:36:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2021-12-16 01:36:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 5447. [2021-12-16 01:36:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5447 states, 5446 states have (on average 1.4779654792508263) internal successors, (8049), 5446 states have internal predecessors, (8049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 8049 transitions. [2021-12-16 01:36:39,138 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 8049 transitions. Word has length 122 [2021-12-16 01:36:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:39,138 INFO L470 AbstractCegarLoop]: Abstraction has 5447 states and 8049 transitions. [2021-12-16 01:36:39,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 8049 transitions. [2021-12-16 01:36:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:36:39,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:39,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:39,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 01:36:39,140 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1982702915, now seen corresponding path program 1 times [2021-12-16 01:36:39,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750696026] [2021-12-16 01:36:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:39,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:39,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:39,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750696026] [2021-12-16 01:36:39,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750696026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:39,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:39,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 01:36:39,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968975707] [2021-12-16 01:36:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:39,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 01:36:39,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 01:36:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-16 01:36:39,504 INFO L87 Difference]: Start difference. First operand 5447 states and 8049 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:44,037 INFO L93 Difference]: Finished difference Result 22401 states and 33274 transitions. [2021-12-16 01:36:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:36:44,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-12-16 01:36:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:44,061 INFO L225 Difference]: With dead ends: 22401 [2021-12-16 01:36:44,061 INFO L226 Difference]: Without dead ends: 21127 [2021-12-16 01:36:44,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-16 01:36:44,065 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 1614 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:44,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 3440 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:36:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21127 states. [2021-12-16 01:36:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21127 to 5404. [2021-12-16 01:36:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5403 states have (on average 1.4776975754210624) internal successors, (7984), 5403 states have internal predecessors, (7984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 7984 transitions. [2021-12-16 01:36:45,245 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 7984 transitions. Word has length 123 [2021-12-16 01:36:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:45,245 INFO L470 AbstractCegarLoop]: Abstraction has 5404 states and 7984 transitions. [2021-12-16 01:36:45,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 7984 transitions. [2021-12-16 01:36:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:36:45,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:45,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:45,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 01:36:45,248 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:45,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash 676674274, now seen corresponding path program 1 times [2021-12-16 01:36:45,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:45,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203418322] [2021-12-16 01:36:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:45,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:45,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:45,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203418322] [2021-12-16 01:36:45,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203418322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:45,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:45,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 01:36:45,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037314905] [2021-12-16 01:36:45,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:45,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 01:36:45,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 01:36:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-16 01:36:45,637 INFO L87 Difference]: Start difference. First operand 5404 states and 7984 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:36:53,121 INFO L93 Difference]: Finished difference Result 32301 states and 48066 transitions. [2021-12-16 01:36:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 01:36:53,121 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-12-16 01:36:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:36:53,162 INFO L225 Difference]: With dead ends: 32301 [2021-12-16 01:36:53,162 INFO L226 Difference]: Without dead ends: 31067 [2021-12-16 01:36:53,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-12-16 01:36:53,171 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1891 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:36:53,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1891 Valid, 3729 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:36:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31067 states. [2021-12-16 01:36:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31067 to 5386. [2021-12-16 01:36:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 1.4765088207985144) internal successors, (7951), 5385 states have internal predecessors, (7951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 7951 transitions. [2021-12-16 01:36:54,555 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 7951 transitions. Word has length 123 [2021-12-16 01:36:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:36:54,556 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 7951 transitions. [2021-12-16 01:36:54,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:36:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 7951 transitions. [2021-12-16 01:36:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:36:54,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:36:54,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:36:54,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 01:36:54,558 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:36:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:36:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash -299237052, now seen corresponding path program 1 times [2021-12-16 01:36:54,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:36:54,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699129769] [2021-12-16 01:36:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:36:54,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:36:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:36:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:36:54,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:36:54,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699129769] [2021-12-16 01:36:54,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699129769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:36:54,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:36:54,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 01:36:54,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3098273] [2021-12-16 01:36:54,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:36:54,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 01:36:54,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:36:54,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 01:36:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-16 01:36:54,960 INFO L87 Difference]: Start difference. First operand 5386 states and 7951 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:37:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:37:03,787 INFO L93 Difference]: Finished difference Result 32175 states and 47883 transitions. [2021-12-16 01:37:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 01:37:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-12-16 01:37:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:37:03,824 INFO L225 Difference]: With dead ends: 32175 [2021-12-16 01:37:03,824 INFO L226 Difference]: Without dead ends: 30961 [2021-12-16 01:37:03,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-12-16 01:37:03,832 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1850 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:37:03,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 3699 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:37:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30961 states.