./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0 --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 f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:07:05,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:07:05,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:07:05,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:07:05,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:07:05,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:07:05,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:07:05,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:07:05,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:07:05,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:07:05,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:07:05,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:07:05,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:07:05,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:07:05,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:07:05,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:07:05,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:07:05,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:07:05,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:07:05,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:07:05,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:07:05,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:07:05,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:07:05,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:07:05,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:07:05,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:07:05,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:07:05,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:07:05,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:07:05,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:07:05,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:07:05,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:07:05,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:07:05,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:07:05,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:07:05,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:07:05,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:07:05,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:07:05,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:07:05,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:07:05,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:07:05,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:07:05,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:07:05,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:07:05,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:07:05,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:07:05,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:07:05,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:07:05,909 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:07:05,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:07:05,910 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:07:05,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:07:05,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:07:05,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:07:05,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:07:05,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:07:05,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:07:05,912 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:07:05,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:07:05,913 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:07:05,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:07:05,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:07:05,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:07:05,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:07:05,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:07:05,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:07:05,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:07:05,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:07:05,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:07:05,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:07:05,915 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:07:05,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:07:05,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:07:05,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:07:05,918 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b [2021-11-22 16:07:06,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:07:06,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:07:06,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:07:06,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:07:06,289 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:07:06,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-22 16:07:06,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/data/9aa56ab5a/0962da9ec57a401ba9872be196d01ca1/FLAGe835ec00b [2021-11-22 16:07:07,139 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:07:07,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-22 16:07:07,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/data/9aa56ab5a/0962da9ec57a401ba9872be196d01ca1/FLAGe835ec00b [2021-11-22 16:07:07,301 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/data/9aa56ab5a/0962da9ec57a401ba9872be196d01ca1 [2021-11-22 16:07:07,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:07:07,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:07:07,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:07:07,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:07:07,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:07:07,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:07:07" (1/1) ... [2021-11-22 16:07:07,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b901a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:07, skipping insertion in model container [2021-11-22 16:07:07,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:07:07" (1/1) ... [2021-11-22 16:07:07,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:07:07,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:07:07,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2021-11-22 16:07:08,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:07:08,118 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:07:08,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2021-11-22 16:07:08,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:07:08,598 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:07:08,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08 WrapperNode [2021-11-22 16:07:08,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:07:08,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:07:08,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:07:08,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:07:08,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,799 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2713 [2021-11-22 16:07:08,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:07:08,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:07:08,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:07:08,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:07:08,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:07:08,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:07:08,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:07:08,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:07:08,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (1/1) ... [2021-11-22 16:07:08,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:07:08,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:07:09,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:07:09,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9361d559-d731-476b-af2d-473ce9f03f03/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:07:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:07:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:07:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:07:09,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:07:09,288 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:07:09,290 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:07:11,461 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:07:11,476 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:07:11,477 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 16:07:11,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:07:11 BoogieIcfgContainer [2021-11-22 16:07:11,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:07:11,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:07:11,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:07:11,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:07:11,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:07:07" (1/3) ... [2021-11-22 16:07:11,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0ab03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:07:11, skipping insertion in model container [2021-11-22 16:07:11,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:08" (2/3) ... [2021-11-22 16:07:11,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0ab03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:07:11, skipping insertion in model container [2021-11-22 16:07:11,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:07:11" (3/3) ... [2021-11-22 16:07:11,491 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-22 16:07:11,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:07:11,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:07:11,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:07:11,568 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 [2021-11-22 16:07:11,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:07:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-22 16:07:11,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:11,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:11,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:11,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:11,685 INFO L85 PathProgramCache]: Analyzing trace with hash 898129935, now seen corresponding path program 1 times [2021-11-22 16:07:11,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:11,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082983793] [2021-11-22 16:07:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:11,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:12,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:12,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082983793] [2021-11-22 16:07:12,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082983793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:12,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:12,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:12,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235041758] [2021-11-22 16:07:12,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:12,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:12,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:12,710 INFO L87 Difference]: Start difference. First operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:13,017 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2021-11-22 16:07:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:13,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-11-22 16:07:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:13,053 INFO L225 Difference]: With dead ends: 1089 [2021-11-22 16:07:13,054 INFO L226 Difference]: Without dead ends: 890 [2021-11-22 16:07:13,060 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 [2021-11-22 16:07:13,071 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 319 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:13,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2808 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:07:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-22 16:07:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2021-11-22 16:07:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 1.7587373167981961) internal successors, (1560), 887 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1560 transitions. [2021-11-22 16:07:13,211 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1560 transitions. Word has length 184 [2021-11-22 16:07:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:13,213 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 1560 transitions. [2021-11-22 16:07:13,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1560 transitions. [2021-11-22 16:07:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 16:07:13,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:13,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:13,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:07:13,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1119640315, now seen corresponding path program 1 times [2021-11-22 16:07:13,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:13,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049573607] [2021-11-22 16:07:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:13,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:13,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:13,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049573607] [2021-11-22 16:07:13,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049573607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:13,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:13,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:13,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227023667] [2021-11-22 16:07:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:13,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:13,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:13,434 INFO L87 Difference]: Start difference. First operand 888 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:13,512 INFO L93 Difference]: Finished difference Result 1237 states and 2155 transitions. [2021-11-22 16:07:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:13,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2021-11-22 16:07:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:13,522 INFO L225 Difference]: With dead ends: 1237 [2021-11-22 16:07:13,522 INFO L226 Difference]: Without dead ends: 1047 [2021-11-22 16:07:13,532 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 [2021-11-22 16:07:13,534 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 300 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:13,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2744 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-11-22 16:07:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1045. [2021-11-22 16:07:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 1.7509578544061302) internal successors, (1828), 1044 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1828 transitions. [2021-11-22 16:07:13,592 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1828 transitions. Word has length 188 [2021-11-22 16:07:13,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:13,593 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1828 transitions. [2021-11-22 16:07:13,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1828 transitions. [2021-11-22 16:07:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-22 16:07:13,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:13,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:13,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:07:13,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2018051092, now seen corresponding path program 1 times [2021-11-22 16:07:13,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:13,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797555850] [2021-11-22 16:07:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:13,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:13,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:13,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797555850] [2021-11-22 16:07:13,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797555850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:13,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:13,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:13,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24447770] [2021-11-22 16:07:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:13,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:13,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:13,780 INFO L87 Difference]: Start difference. First operand 1045 states and 1828 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:13,862 INFO L93 Difference]: Finished difference Result 2052 states and 3531 transitions. [2021-11-22 16:07:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2021-11-22 16:07:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:13,875 INFO L225 Difference]: With dead ends: 2052 [2021-11-22 16:07:13,876 INFO L226 Difference]: Without dead ends: 1532 [2021-11-22 16:07:13,877 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 [2021-11-22 16:07:13,886 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 292 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:13,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2509 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-11-22 16:07:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1530. [2021-11-22 16:07:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 1.7292347939829955) internal successors, (2644), 1529 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2644 transitions. [2021-11-22 16:07:13,965 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2644 transitions. Word has length 188 [2021-11-22 16:07:13,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:13,965 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 2644 transitions. [2021-11-22 16:07:13,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2644 transitions. [2021-11-22 16:07:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-22 16:07:13,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:13,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:13,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:07:13,972 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:13,973 INFO L85 PathProgramCache]: Analyzing trace with hash -689859409, now seen corresponding path program 1 times [2021-11-22 16:07:13,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:13,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405253760] [2021-11-22 16:07:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:13,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:14,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:14,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405253760] [2021-11-22 16:07:14,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405253760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:14,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:14,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:14,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756073790] [2021-11-22 16:07:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:14,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:14,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:14,138 INFO L87 Difference]: Start difference. First operand 1530 states and 2644 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:14,263 INFO L93 Difference]: Finished difference Result 3474 states and 5916 transitions. [2021-11-22 16:07:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:14,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2021-11-22 16:07:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:14,280 INFO L225 Difference]: With dead ends: 3474 [2021-11-22 16:07:14,281 INFO L226 Difference]: Without dead ends: 2469 [2021-11-22 16:07:14,283 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 [2021-11-22 16:07:14,291 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 285 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:14,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2674 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:14,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-11-22 16:07:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-11-22 16:07:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2466 states have (on average 1.7072181670721818) internal successors, (4210), 2466 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4210 transitions. [2021-11-22 16:07:14,432 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4210 transitions. Word has length 192 [2021-11-22 16:07:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:14,433 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 4210 transitions. [2021-11-22 16:07:14,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4210 transitions. [2021-11-22 16:07:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-22 16:07:14,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:14,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:14,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:07:14,440 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:14,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1139258805, now seen corresponding path program 1 times [2021-11-22 16:07:14,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:14,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116103996] [2021-11-22 16:07:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:14,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:14,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:14,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116103996] [2021-11-22 16:07:14,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116103996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:14,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:14,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:14,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810224713] [2021-11-22 16:07:14,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:14,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:14,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:14,636 INFO L87 Difference]: Start difference. First operand 2467 states and 4210 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:14,795 INFO L93 Difference]: Finished difference Result 4337 states and 7367 transitions. [2021-11-22 16:07:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2021-11-22 16:07:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:14,818 INFO L225 Difference]: With dead ends: 4337 [2021-11-22 16:07:14,819 INFO L226 Difference]: Without dead ends: 3332 [2021-11-22 16:07:14,822 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 [2021-11-22 16:07:14,823 INFO L933 BasicCegarLoop]: 1430 mSDtfsCounter, 286 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:14,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2653 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-11-22 16:07:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3330. [2021-11-22 16:07:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3329 states have (on average 1.699909882847702) internal successors, (5659), 3329 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 5659 transitions. [2021-11-22 16:07:15,069 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 5659 transitions. Word has length 196 [2021-11-22 16:07:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:15,069 INFO L470 AbstractCegarLoop]: Abstraction has 3330 states and 5659 transitions. [2021-11-22 16:07:15,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 5659 transitions. [2021-11-22 16:07:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-22 16:07:15,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:15,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:15,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:07:15,079 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash -939390388, now seen corresponding path program 1 times [2021-11-22 16:07:15,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:15,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111846193] [2021-11-22 16:07:15,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:15,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:15,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:15,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111846193] [2021-11-22 16:07:15,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111846193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:15,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:15,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:15,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707712034] [2021-11-22 16:07:15,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:15,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:15,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:15,239 INFO L87 Difference]: Start difference. First operand 3330 states and 5659 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:15,590 INFO L93 Difference]: Finished difference Result 8626 states and 14523 transitions. [2021-11-22 16:07:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2021-11-22 16:07:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:15,629 INFO L225 Difference]: With dead ends: 8626 [2021-11-22 16:07:15,629 INFO L226 Difference]: Without dead ends: 5879 [2021-11-22 16:07:15,638 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 [2021-11-22 16:07:15,640 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 278 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:15,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2640 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2021-11-22 16:07:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5877. [2021-11-22 16:07:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.681926480599047) internal successors, (9883), 5876 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 9883 transitions. [2021-11-22 16:07:16,001 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 9883 transitions. Word has length 196 [2021-11-22 16:07:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:16,002 INFO L470 AbstractCegarLoop]: Abstraction has 5877 states and 9883 transitions. [2021-11-22 16:07:16,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 9883 transitions. [2021-11-22 16:07:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-22 16:07:16,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:16,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:16,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:07:16,009 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:16,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1438127064, now seen corresponding path program 1 times [2021-11-22 16:07:16,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:16,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364392446] [2021-11-22 16:07:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:16,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:16,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364392446] [2021-11-22 16:07:16,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364392446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:16,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:16,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:16,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828772727] [2021-11-22 16:07:16,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:16,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:16,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:16,159 INFO L87 Difference]: Start difference. First operand 5877 states and 9883 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:16,591 INFO L93 Difference]: Finished difference Result 10823 states and 18189 transitions. [2021-11-22 16:07:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:16,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2021-11-22 16:07:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:16,667 INFO L225 Difference]: With dead ends: 10823 [2021-11-22 16:07:16,668 INFO L226 Difference]: Without dead ends: 8076 [2021-11-22 16:07:16,675 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 [2021-11-22 16:07:16,677 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 279 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:16,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2618 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-11-22 16:07:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8074. [2021-11-22 16:07:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 8073 states have (on average 1.6780626780626782) internal successors, (13547), 8073 states have internal predecessors, (13547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 13547 transitions. [2021-11-22 16:07:17,191 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 13547 transitions. Word has length 200 [2021-11-22 16:07:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:17,192 INFO L470 AbstractCegarLoop]: Abstraction has 8074 states and 13547 transitions. [2021-11-22 16:07:17,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 13547 transitions. [2021-11-22 16:07:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-22 16:07:17,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:17,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:17,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 16:07:17,198 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1388814671, now seen corresponding path program 1 times [2021-11-22 16:07:17,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:17,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37081468] [2021-11-22 16:07:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:17,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:17,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:17,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37081468] [2021-11-22 16:07:17,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37081468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:17,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:17,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:17,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309499665] [2021-11-22 16:07:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:17,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:17,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:17,359 INFO L87 Difference]: Start difference. First operand 8074 states and 13547 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:18,208 INFO L93 Difference]: Finished difference Result 22370 states and 37291 transitions. [2021-11-22 16:07:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2021-11-22 16:07:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:18,354 INFO L225 Difference]: With dead ends: 22370 [2021-11-22 16:07:18,354 INFO L226 Difference]: Without dead ends: 14925 [2021-11-22 16:07:18,367 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 [2021-11-22 16:07:18,368 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 271 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:18,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2606 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14925 states. [2021-11-22 16:07:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14925 to 14923. [2021-11-22 16:07:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 14922 states have (on average 1.6617745610507975) internal successors, (24797), 14922 states have internal predecessors, (24797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 24797 transitions. [2021-11-22 16:07:19,182 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 24797 transitions. Word has length 200 [2021-11-22 16:07:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:19,185 INFO L470 AbstractCegarLoop]: Abstraction has 14923 states and 24797 transitions. [2021-11-22 16:07:19,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 24797 transitions. [2021-11-22 16:07:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-22 16:07:19,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:19,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:19,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:07:19,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:19,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1584670309, now seen corresponding path program 1 times [2021-11-22 16:07:19,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:19,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625827672] [2021-11-22 16:07:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:19,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:19,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:19,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625827672] [2021-11-22 16:07:19,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625827672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:19,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:19,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:19,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129622777] [2021-11-22 16:07:19,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:19,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:19,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:19,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:19,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:19,317 INFO L87 Difference]: Start difference. First operand 14923 states and 24797 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:20,189 INFO L93 Difference]: Finished difference Result 28077 states and 46723 transitions. [2021-11-22 16:07:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2021-11-22 16:07:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:20,258 INFO L225 Difference]: With dead ends: 28077 [2021-11-22 16:07:20,258 INFO L226 Difference]: Without dead ends: 20632 [2021-11-22 16:07:20,279 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 [2021-11-22 16:07:20,282 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 272 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:20,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2583 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20632 states. [2021-11-22 16:07:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20632 to 20630. [2021-11-22 16:07:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20630 states, 20629 states have (on average 1.6591691308352319) internal successors, (34227), 20629 states have internal predecessors, (34227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20630 states to 20630 states and 34227 transitions. [2021-11-22 16:07:21,640 INFO L78 Accepts]: Start accepts. Automaton has 20630 states and 34227 transitions. Word has length 204 [2021-11-22 16:07:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:21,641 INFO L470 AbstractCegarLoop]: Abstraction has 20630 states and 34227 transitions. [2021-11-22 16:07:21,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 20630 states and 34227 transitions. [2021-11-22 16:07:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-22 16:07:21,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:21,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:21,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:07:21,647 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:21,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash -247447380, now seen corresponding path program 1 times [2021-11-22 16:07:21,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:21,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111667851] [2021-11-22 16:07:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:21,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:21,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:21,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111667851] [2021-11-22 16:07:21,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111667851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:21,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:21,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:07:21,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67783336] [2021-11-22 16:07:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:21,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:07:21,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:07:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:07:21,844 INFO L87 Difference]: Start difference. First operand 20630 states and 34227 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:27,187 INFO L93 Difference]: Finished difference Result 152827 states and 254674 transitions. [2021-11-22 16:07:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:07:27,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2021-11-22 16:07:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:27,722 INFO L225 Difference]: With dead ends: 152827 [2021-11-22 16:07:27,722 INFO L226 Difference]: Without dead ends: 132872 [2021-11-22 16:07:27,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-22 16:07:27,825 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 3735 mSDsluCounter, 9320 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3735 SdHoareTripleChecker+Valid, 10579 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:27,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3735 Valid, 10579 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 16:07:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132872 states. [2021-11-22 16:07:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132872 to 40288. [2021-11-22 16:07:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40288 states, 40287 states have (on average 1.6533124829349417) internal successors, (66607), 40287 states have internal predecessors, (66607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40288 states to 40288 states and 66607 transitions. [2021-11-22 16:07:31,592 INFO L78 Accepts]: Start accepts. Automaton has 40288 states and 66607 transitions. Word has length 204 [2021-11-22 16:07:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:31,593 INFO L470 AbstractCegarLoop]: Abstraction has 40288 states and 66607 transitions. [2021-11-22 16:07:31,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 40288 states and 66607 transitions. [2021-11-22 16:07:31,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-22 16:07:31,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:31,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:31,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 16:07:31,600 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash 847446003, now seen corresponding path program 1 times [2021-11-22 16:07:31,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:31,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889913853] [2021-11-22 16:07:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:31,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:31,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:31,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889913853] [2021-11-22 16:07:31,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889913853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:31,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:31,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:07:31,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338521707] [2021-11-22 16:07:31,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:31,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:07:31,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:31,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:07:31,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:07:31,939 INFO L87 Difference]: Start difference. First operand 40288 states and 66607 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:36,747 INFO L93 Difference]: Finished difference Result 132051 states and 219052 transitions. [2021-11-22 16:07:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:07:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2021-11-22 16:07:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:37,274 INFO L225 Difference]: With dead ends: 132051 [2021-11-22 16:07:37,275 INFO L226 Difference]: Without dead ends: 92486 [2021-11-22 16:07:37,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:07:37,383 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 939 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:37,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 4045 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:07:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92486 states. [2021-11-22 16:07:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92486 to 66278. [2021-11-22 16:07:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66278 states, 66277 states have (on average 1.653891998732592) internal successors, (109615), 66277 states have internal predecessors, (109615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66278 states to 66278 states and 109615 transitions. [2021-11-22 16:07:41,676 INFO L78 Accepts]: Start accepts. Automaton has 66278 states and 109615 transitions. Word has length 205 [2021-11-22 16:07:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:41,678 INFO L470 AbstractCegarLoop]: Abstraction has 66278 states and 109615 transitions. [2021-11-22 16:07:41,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 66278 states and 109615 transitions. [2021-11-22 16:07:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-22 16:07:41,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:41,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:41,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:07:41,685 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:41,686 INFO L85 PathProgramCache]: Analyzing trace with hash -258860870, now seen corresponding path program 1 times [2021-11-22 16:07:41,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:41,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512397503] [2021-11-22 16:07:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:41,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:41,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:41,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512397503] [2021-11-22 16:07:41,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512397503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:41,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:41,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:41,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867933161] [2021-11-22 16:07:41,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:41,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:41,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:41,820 INFO L87 Difference]: Start difference. First operand 66278 states and 109615 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:47,838 INFO L93 Difference]: Finished difference Result 126276 states and 209409 transitions. [2021-11-22 16:07:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:47,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2021-11-22 16:07:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:48,028 INFO L225 Difference]: With dead ends: 126276 [2021-11-22 16:07:48,028 INFO L226 Difference]: Without dead ends: 91716 [2021-11-22 16:07:48,073 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 [2021-11-22 16:07:48,074 INFO L933 BasicCegarLoop]: 1496 mSDtfsCounter, 293 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:48,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2718 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91716 states. [2021-11-22 16:07:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91716 to 91714. [2021-11-22 16:07:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91714 states, 91713 states have (on average 1.6520667735217471) internal successors, (151516), 91713 states have internal predecessors, (151516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91714 states to 91714 states and 151516 transitions. [2021-11-22 16:07:53,356 INFO L78 Accepts]: Start accepts. Automaton has 91714 states and 151516 transitions. Word has length 205 [2021-11-22 16:07:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:53,356 INFO L470 AbstractCegarLoop]: Abstraction has 91714 states and 151516 transitions. [2021-11-22 16:07:53,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 91714 states and 151516 transitions. [2021-11-22 16:07:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-22 16:07:53,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:53,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:53,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:07:53,362 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:07:53,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:53,362 INFO L85 PathProgramCache]: Analyzing trace with hash 433960531, now seen corresponding path program 1 times [2021-11-22 16:07:53,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:53,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126085329] [2021-11-22 16:07:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:53,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:53,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:53,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126085329] [2021-11-22 16:07:53,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126085329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:53,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:53,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:07:53,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292613911] [2021-11-22 16:07:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:53,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:07:53,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:07:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:07:53,471 INFO L87 Difference]: Start difference. First operand 91714 states and 151516 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)