./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8 --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 2126042da788f2122824de6358ec68ac8216a4309db7602f144bdab8df75c67a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:32:35,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:32:35,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:32:35,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:32:35,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:32:35,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:32:35,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:32:35,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:32:35,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:32:35,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:32:35,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:32:35,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:32:35,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:32:35,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:32:35,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:32:35,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:32:35,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:32:35,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:32:35,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:32:35,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:32:35,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:32:35,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:32:35,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:32:35,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:32:35,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:32:35,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:32:35,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:32:35,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:32:35,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:32:35,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:32:35,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:32:35,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:32:35,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:32:35,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:32:35,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:32:35,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:32:35,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:32:35,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:32:35,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:32:35,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:32:35,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:32:35,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:32:36,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:32:36,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:32:36,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:32:36,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:32:36,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:32:36,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:32:36,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:32:36,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:32:36,035 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:32:36,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:32:36,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:32:36,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:32:36,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:32:36,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:32:36,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:32:36,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:32:36,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:32:36,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:32:36,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:32:36,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:32:36,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:32:36,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:32:36,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:32:36,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:32:36,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:32:36,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:32:36,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:32:36,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:32:36,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:32:36,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:32:36,042 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:32:36,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:32:36,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:32:36,043 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_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2126042da788f2122824de6358ec68ac8216a4309db7602f144bdab8df75c67a [2022-11-16 11:32:36,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:32:36,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:32:36,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:32:36,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:32:36,369 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:32:36,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-11-16 11:32:36,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/data/60a7d45e9/936b4dab28d044e58132c31ff46b9361/FLAG7153ea95b [2022-11-16 11:32:37,384 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:32:37,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-11-16 11:32:37,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/data/60a7d45e9/936b4dab28d044e58132c31ff46b9361/FLAG7153ea95b [2022-11-16 11:32:37,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/data/60a7d45e9/936b4dab28d044e58132c31ff46b9361 [2022-11-16 11:32:37,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:32:37,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:32:37,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:37,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:32:37,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:32:37,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:37" (1/1) ... [2022-11-16 11:32:37,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cdf479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:37, skipping insertion in model container [2022-11-16 11:32:37,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:37" (1/1) ... [2022-11-16 11:32:37,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:32:38,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:32:38,510 WARN L229 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_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2022-11-16 11:32:38,571 WARN L229 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_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2022-11-16 11:32:39,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:39,524 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:32:39,580 WARN L229 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_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2022-11-16 11:32:39,606 WARN L229 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_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2022-11-16 11:32:40,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:40,208 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:32:40,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40 WrapperNode [2022-11-16 11:32:40,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:40,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:32:40,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:32:40,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:32:40,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:40,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:40,730 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5071 [2022-11-16 11:32:40,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:32:40,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:32:40,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:32:40,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:32:40,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:40,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:40,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:40,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:41,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:41,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:41,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:41,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:41,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:32:41,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:32:41,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:32:41,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:32:41,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (1/1) ... [2022-11-16 11:32:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:32:41,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:32:41,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:32:41,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:32:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:32:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:32:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:32:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:32:41,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:32:41,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:32:46,848 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:32:46,862 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:32:46,862 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:32:46,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:46 BoogieIcfgContainer [2022-11-16 11:32:46,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:32:46,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:32:46,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:32:46,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:32:46,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:32:37" (1/3) ... [2022-11-16 11:32:46,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a17d263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:46, skipping insertion in model container [2022-11-16 11:32:46,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:40" (2/3) ... [2022-11-16 11:32:46,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a17d263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:46, skipping insertion in model container [2022-11-16 11:32:46,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:46" (3/3) ... [2022-11-16 11:32:46,876 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-11-16 11:32:46,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:32:46,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:32:47,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:32:47,017 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e91aded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:32:47,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:32:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:32:47,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:47,039 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:47,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:47,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2022-11-16 11:32:47,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:47,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556067787] [2022-11-16 11:32:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:47,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556067787] [2022-11-16 11:32:47,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556067787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:47,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:47,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:32:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975176464] [2022-11-16 11:32:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:47,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:32:47,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:32:47,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:32:47,399 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 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 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:47,483 INFO L93 Difference]: Finished difference Result 1761 states and 3344 transitions. [2022-11-16 11:32:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:32:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-16 11:32:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:47,504 INFO L225 Difference]: With dead ends: 1761 [2022-11-16 11:32:47,504 INFO L226 Difference]: Without dead ends: 833 [2022-11-16 11:32:47,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:32:47,514 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:47,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-16 11:32:47,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-16 11:32:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2022-11-16 11:32:47,618 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2022-11-16 11:32:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:47,619 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2022-11-16 11:32:47,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2022-11-16 11:32:47,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:32:47,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:47,623 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:47,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:32:47,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2022-11-16 11:32:47,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:47,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867923335] [2022-11-16 11:32:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:47,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:47,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867923335] [2022-11-16 11:32:47,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867923335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:47,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:47,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:32:47,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764487749] [2022-11-16 11:32:47,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:47,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:32:47,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:32:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:32:47,914 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:48,129 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2022-11-16 11:32:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:32:48,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-16 11:32:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:48,134 INFO L225 Difference]: With dead ends: 879 [2022-11-16 11:32:48,134 INFO L226 Difference]: Without dead ends: 833 [2022-11-16 11:32:48,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:32:48,136 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 3 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:48,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6254 Invalid, 41 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:32:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-16 11:32:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-16 11:32:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2022-11-16 11:32:48,162 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2022-11-16 11:32:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:48,163 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2022-11-16 11:32:48,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2022-11-16 11:32:48,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 11:32:48,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:48,165 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:48,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:32:48,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:48,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2022-11-16 11:32:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:48,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216725427] [2022-11-16 11:32:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:48,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216725427] [2022-11-16 11:32:48,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216725427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:48,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:48,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:32:48,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594204424] [2022-11-16 11:32:48,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:48,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:32:48,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:32:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:32:48,425 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:48,740 INFO L93 Difference]: Finished difference Result 1253 states and 2213 transitions. [2022-11-16 11:32:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:32:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-16 11:32:48,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:48,750 INFO L225 Difference]: With dead ends: 1253 [2022-11-16 11:32:48,751 INFO L226 Difference]: Without dead ends: 1211 [2022-11-16 11:32:48,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:32:48,761 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:48,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:32:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-11-16 11:32:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 873. [2022-11-16 11:32:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8450057405281286) internal successors, (1607), 872 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1607 transitions. [2022-11-16 11:32:48,809 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1607 transitions. Word has length 54 [2022-11-16 11:32:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:48,809 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1607 transitions. [2022-11-16 11:32:48,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1607 transitions. [2022-11-16 11:32:48,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:32:48,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:48,818 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:32:48,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2022-11-16 11:32:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:48,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271834785] [2022-11-16 11:32:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:48,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:48,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:48,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271834785] [2022-11-16 11:32:48,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271834785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:48,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:48,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478195213] [2022-11-16 11:32:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:48,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:48,984 INFO L87 Difference]: Start difference. First operand 873 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:49,096 INFO L93 Difference]: Finished difference Result 1026 states and 1850 transitions. [2022-11-16 11:32:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-16 11:32:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:49,101 INFO L225 Difference]: With dead ends: 1026 [2022-11-16 11:32:49,101 INFO L226 Difference]: Without dead ends: 944 [2022-11-16 11:32:49,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:49,115 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:49,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-16 11:32:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-11-16 11:32:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2022-11-16 11:32:49,153 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 56 [2022-11-16 11:32:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:49,155 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2022-11-16 11:32:49,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2022-11-16 11:32:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:32:49,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:49,159 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:49,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:32:49,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2022-11-16 11:32:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:49,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154431600] [2022-11-16 11:32:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:49,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:49,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154431600] [2022-11-16 11:32:49,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154431600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:49,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:49,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:32:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565242671] [2022-11-16 11:32:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:49,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:32:49,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:32:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:32:49,569 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:49,836 INFO L93 Difference]: Finished difference Result 1095 states and 1955 transitions. [2022-11-16 11:32:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:32:49,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-16 11:32:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:49,842 INFO L225 Difference]: With dead ends: 1095 [2022-11-16 11:32:49,843 INFO L226 Difference]: Without dead ends: 944 [2022-11-16 11:32:49,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:32:49,846 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 4599 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:49,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 1789 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:32:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-16 11:32:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-11-16 11:32:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8223404255319149) internal successors, (1713), 941 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1713 transitions. [2022-11-16 11:32:49,887 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1713 transitions. Word has length 56 [2022-11-16 11:32:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:49,891 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1713 transitions. [2022-11-16 11:32:49,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:49,892 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1713 transitions. [2022-11-16 11:32:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:32:49,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:49,896 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:49,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:32:49,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:49,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2022-11-16 11:32:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:49,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884064052] [2022-11-16 11:32:49,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:49,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:50,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:50,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884064052] [2022-11-16 11:32:50,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884064052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:50,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:50,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:32:50,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600714647] [2022-11-16 11:32:50,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:50,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:32:50,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:50,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:32:50,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:32:50,259 INFO L87 Difference]: Start difference. First operand 942 states and 1713 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:50,502 INFO L93 Difference]: Finished difference Result 1090 states and 1940 transitions. [2022-11-16 11:32:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:32:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-11-16 11:32:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:50,507 INFO L225 Difference]: With dead ends: 1090 [2022-11-16 11:32:50,508 INFO L226 Difference]: Without dead ends: 1088 [2022-11-16 11:32:50,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:32:50,510 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 394 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:50,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-11-16 11:32:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 948. [2022-11-16 11:32:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8160676532769555) internal successors, (1718), 947 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1718 transitions. [2022-11-16 11:32:50,554 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1718 transitions. Word has length 57 [2022-11-16 11:32:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:50,555 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1718 transitions. [2022-11-16 11:32:50,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1718 transitions. [2022-11-16 11:32:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:32:50,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:50,557 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:32:50,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:50,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:50,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2022-11-16 11:32:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:50,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053609684] [2022-11-16 11:32:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:50,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:50,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053609684] [2022-11-16 11:32:50,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053609684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:50,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:50,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:50,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21726952] [2022-11-16 11:32:50,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:50,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:50,634 INFO L87 Difference]: Start difference. First operand 948 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:50,703 INFO L93 Difference]: Finished difference Result 1118 states and 1979 transitions. [2022-11-16 11:32:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:50,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:32:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:50,708 INFO L225 Difference]: With dead ends: 1118 [2022-11-16 11:32:50,709 INFO L226 Difference]: Without dead ends: 1030 [2022-11-16 11:32:50,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:50,710 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:50,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-16 11:32:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2022-11-16 11:32:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1026 states have (on average 1.7923976608187135) internal successors, (1839), 1027 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1839 transitions. [2022-11-16 11:32:50,767 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1839 transitions. Word has length 58 [2022-11-16 11:32:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:50,768 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1839 transitions. [2022-11-16 11:32:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1839 transitions. [2022-11-16 11:32:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:32:50,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:50,769 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:50,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:32:50,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2022-11-16 11:32:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:50,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982658425] [2022-11-16 11:32:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:50,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:50,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982658425] [2022-11-16 11:32:50,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982658425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:50,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:50,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389439174] [2022-11-16 11:32:50,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:50,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:50,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:50,829 INFO L87 Difference]: Start difference. First operand 1028 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:50,907 INFO L93 Difference]: Finished difference Result 1474 states and 2519 transitions. [2022-11-16 11:32:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:32:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:50,912 INFO L225 Difference]: With dead ends: 1474 [2022-11-16 11:32:50,913 INFO L226 Difference]: Without dead ends: 1239 [2022-11-16 11:32:50,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:50,914 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:50,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-16 11:32:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2022-11-16 11:32:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1235 states have (on average 1.7417004048582996) internal successors, (2151), 1236 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2151 transitions. [2022-11-16 11:32:50,985 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2151 transitions. Word has length 58 [2022-11-16 11:32:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:50,986 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2151 transitions. [2022-11-16 11:32:50,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2151 transitions. [2022-11-16 11:32:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:32:50,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:50,987 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:50,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:32:50,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2022-11-16 11:32:50,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:50,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997413205] [2022-11-16 11:32:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:50,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:51,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997413205] [2022-11-16 11:32:51,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997413205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:51,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:51,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066907142] [2022-11-16 11:32:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:51,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:51,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:51,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:51,046 INFO L87 Difference]: Start difference. First operand 1237 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:51,176 INFO L93 Difference]: Finished difference Result 2077 states and 3413 transitions. [2022-11-16 11:32:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:32:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:51,183 INFO L225 Difference]: With dead ends: 2077 [2022-11-16 11:32:51,183 INFO L226 Difference]: Without dead ends: 1633 [2022-11-16 11:32:51,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:51,185 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:51,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-11-16 11:32:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2022-11-16 11:32:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6740331491712708) internal successors, (2727), 1630 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2727 transitions. [2022-11-16 11:32:51,392 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2727 transitions. Word has length 58 [2022-11-16 11:32:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:51,392 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2727 transitions. [2022-11-16 11:32:51,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2727 transitions. [2022-11-16 11:32:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:32:51,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:51,393 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:32:51,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2022-11-16 11:32:51,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:51,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899878979] [2022-11-16 11:32:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:51,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:51,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:51,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899878979] [2022-11-16 11:32:51,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899878979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:51,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:51,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51968880] [2022-11-16 11:32:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:51,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:51,464 INFO L87 Difference]: Start difference. First operand 1631 states and 2727 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:51,722 INFO L93 Difference]: Finished difference Result 3211 states and 5057 transitions. [2022-11-16 11:32:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:51,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:32:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:51,731 INFO L225 Difference]: With dead ends: 3211 [2022-11-16 11:32:51,731 INFO L226 Difference]: Without dead ends: 2373 [2022-11-16 11:32:51,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:51,736 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:51,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-11-16 11:32:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2371. [2022-11-16 11:32:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2369 states have (on average 1.5968763191219923) internal successors, (3783), 2370 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3783 transitions. [2022-11-16 11:32:51,994 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3783 transitions. Word has length 58 [2022-11-16 11:32:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:51,994 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3783 transitions. [2022-11-16 11:32:51,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3783 transitions. [2022-11-16 11:32:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:32:51,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:51,995 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:51,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:32:51,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2022-11-16 11:32:51,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:51,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117012607] [2022-11-16 11:32:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:51,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:52,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117012607] [2022-11-16 11:32:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117012607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:52,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:52,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213785112] [2022-11-16 11:32:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:32:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:32:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:52,055 INFO L87 Difference]: Start difference. First operand 2371 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:32:52,598 INFO L93 Difference]: Finished difference Result 5335 states and 8057 transitions. [2022-11-16 11:32:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:32:52,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:32:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:32:52,611 INFO L225 Difference]: With dead ends: 5335 [2022-11-16 11:32:52,611 INFO L226 Difference]: Without dead ends: 3757 [2022-11-16 11:32:52,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:32:52,614 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:32:52,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:32:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-11-16 11:32:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3755. [2022-11-16 11:32:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3753 states have (on average 1.5195843325339728) internal successors, (5703), 3754 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5703 transitions. [2022-11-16 11:32:53,069 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5703 transitions. Word has length 58 [2022-11-16 11:32:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:32:53,069 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5703 transitions. [2022-11-16 11:32:53,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5703 transitions. [2022-11-16 11:32:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:32:53,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:32:53,071 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:32:53,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:32:53,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:32:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 701701722, now seen corresponding path program 1 times [2022-11-16 11:32:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:53,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326529879] [2022-11-16 11:32:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:53,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:53,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326529879] [2022-11-16 11:32:53,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326529879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:53,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:53,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:32:53,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505741462] [2022-11-16 11:32:53,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:53,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:32:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:32:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:32:53,226 INFO L87 Difference]: Start difference. First operand 3755 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:02,419 INFO L93 Difference]: Finished difference Result 6010 states and 10012 transitions. [2022-11-16 11:33:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:33:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-16 11:33:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:02,440 INFO L225 Difference]: With dead ends: 6010 [2022-11-16 11:33:02,440 INFO L226 Difference]: Without dead ends: 5257 [2022-11-16 11:33:02,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:02,443 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 2387 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:02,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 797 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-16 11:33:02,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2022-11-16 11:33:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5257. [2022-11-16 11:33:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5255 states have (on average 1.487535680304472) internal successors, (7817), 5256 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7817 transitions. [2022-11-16 11:33:03,100 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7817 transitions. Word has length 67 [2022-11-16 11:33:03,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:03,101 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 7817 transitions. [2022-11-16 11:33:03,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7817 transitions. [2022-11-16 11:33:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:33:03,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:03,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:03,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:33:03,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2022-11-16 11:33:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:03,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918545249] [2022-11-16 11:33:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:33:03,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:03,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918545249] [2022-11-16 11:33:03,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918545249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:03,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:03,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:33:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817769855] [2022-11-16 11:33:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:03,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:33:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:33:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:03,295 INFO L87 Difference]: Start difference. First operand 5257 states and 7817 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:05,620 INFO L93 Difference]: Finished difference Result 19861 states and 28623 transitions. [2022-11-16 11:33:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 77 [2022-11-16 11:33:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:05,668 INFO L225 Difference]: With dead ends: 19861 [2022-11-16 11:33:05,668 INFO L226 Difference]: Without dead ends: 17747 [2022-11-16 11:33:05,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:05,675 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6308 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:05,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 3568 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2022-11-16 11:33:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 7801. [2022-11-16 11:33:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 7799 states have (on average 1.4618540838569047) internal successors, (11401), 7800 states have internal predecessors, (11401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 11401 transitions. [2022-11-16 11:33:06,740 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 11401 transitions. Word has length 77 [2022-11-16 11:33:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:06,741 INFO L495 AbstractCegarLoop]: Abstraction has 7801 states and 11401 transitions. [2022-11-16 11:33:06,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:06,742 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 11401 transitions. [2022-11-16 11:33:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:33:06,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:06,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:06,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:33:06,745 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2022-11-16 11:33:06,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:06,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800542368] [2022-11-16 11:33:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:06,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:06,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:06,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800542368] [2022-11-16 11:33:06,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800542368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:06,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:06,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:33:06,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715722222] [2022-11-16 11:33:06,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:06,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:33:06,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:06,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:33:06,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:06,949 INFO L87 Difference]: Start difference. First operand 7801 states and 11401 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:09,237 INFO L93 Difference]: Finished difference Result 22821 states and 32815 transitions. [2022-11-16 11:33:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:09,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 77 [2022-11-16 11:33:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:09,287 INFO L225 Difference]: With dead ends: 22821 [2022-11-16 11:33:09,287 INFO L226 Difference]: Without dead ends: 19859 [2022-11-16 11:33:09,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:09,297 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6352 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6352 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:09,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6352 Valid, 3615 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:09,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2022-11-16 11:33:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 11817. [2022-11-16 11:33:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 11815 states have (on average 1.4429961912822682) internal successors, (17049), 11816 states have internal predecessors, (17049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 17049 transitions. [2022-11-16 11:33:11,126 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 17049 transitions. Word has length 77 [2022-11-16 11:33:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:11,126 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 17049 transitions. [2022-11-16 11:33:11,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:11,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 17049 transitions. [2022-11-16 11:33:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:33:11,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:11,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:11,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:33:11,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2022-11-16 11:33:11,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:11,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754142717] [2022-11-16 11:33:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:11,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:33:11,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:11,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754142717] [2022-11-16 11:33:11,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754142717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:11,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:11,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:33:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947306017] [2022-11-16 11:33:11,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:33:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:33:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:11,357 INFO L87 Difference]: Start difference. First operand 11817 states and 17049 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:14,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:14,493 INFO L93 Difference]: Finished difference Result 25781 states and 36991 transitions. [2022-11-16 11:33:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:14,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 77 [2022-11-16 11:33:14,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:14,541 INFO L225 Difference]: With dead ends: 25781 [2022-11-16 11:33:14,541 INFO L226 Difference]: Without dead ends: 22819 [2022-11-16 11:33:14,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:14,549 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6398 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6398 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:14,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6398 Valid, 3578 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22819 states. [2022-11-16 11:33:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22819 to 14777. [2022-11-16 11:33:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 14775 states have (on average 1.4365482233502538) internal successors, (21225), 14776 states have internal predecessors, (21225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 21225 transitions. [2022-11-16 11:33:16,374 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 21225 transitions. Word has length 77 [2022-11-16 11:33:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:16,374 INFO L495 AbstractCegarLoop]: Abstraction has 14777 states and 21225 transitions. [2022-11-16 11:33:16,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 21225 transitions. [2022-11-16 11:33:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:33:16,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:16,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:16,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:33:16,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2022-11-16 11:33:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:16,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652100363] [2022-11-16 11:33:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:33:16,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652100363] [2022-11-16 11:33:16,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652100363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:16,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:16,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:33:16,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156142105] [2022-11-16 11:33:16,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:16,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:33:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:16,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:33:16,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:16,567 INFO L87 Difference]: Start difference. First operand 14777 states and 21225 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:20,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:20,198 INFO L93 Difference]: Finished difference Result 28741 states and 41167 transitions. [2022-11-16 11:33:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:20,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 77 [2022-11-16 11:33:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:20,254 INFO L225 Difference]: With dead ends: 28741 [2022-11-16 11:33:20,255 INFO L226 Difference]: Without dead ends: 25779 [2022-11-16 11:33:20,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:20,266 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6356 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6356 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:20,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6356 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25779 states. [2022-11-16 11:33:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25779 to 17737. [2022-11-16 11:33:22,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 17735 states have (on average 1.4322526078376092) internal successors, (25401), 17736 states have internal predecessors, (25401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 25401 transitions. [2022-11-16 11:33:22,701 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 25401 transitions. Word has length 77 [2022-11-16 11:33:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:22,702 INFO L495 AbstractCegarLoop]: Abstraction has 17737 states and 25401 transitions. [2022-11-16 11:33:22,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 25401 transitions. [2022-11-16 11:33:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:33:22,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:22,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:22,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:33:22,705 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2022-11-16 11:33:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:22,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608229598] [2022-11-16 11:33:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:22,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:33:22,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:22,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608229598] [2022-11-16 11:33:22,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608229598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:22,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:22,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:33:22,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58876761] [2022-11-16 11:33:22,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:22,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:33:22,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:22,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:33:22,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:22,865 INFO L87 Difference]: Start difference. First operand 17737 states and 25401 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:27,213 INFO L93 Difference]: Finished difference Result 31701 states and 45343 transitions. [2022-11-16 11:33:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:27,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 77 [2022-11-16 11:33:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:27,257 INFO L225 Difference]: With dead ends: 31701 [2022-11-16 11:33:27,258 INFO L226 Difference]: Without dead ends: 28739 [2022-11-16 11:33:27,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:27,272 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6308 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:27,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 3698 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2022-11-16 11:33:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 20697. [2022-11-16 11:33:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4291857936699686) internal successors, (29577), 20696 states have internal predecessors, (29577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29577 transitions. [2022-11-16 11:33:30,045 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29577 transitions. Word has length 77 [2022-11-16 11:33:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:30,045 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29577 transitions. [2022-11-16 11:33:30,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29577 transitions. [2022-11-16 11:33:30,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 11:33:30,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:30,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:30,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:33:30,049 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2022-11-16 11:33:30,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:30,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23068152] [2022-11-16 11:33:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:30,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:30,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23068152] [2022-11-16 11:33:30,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23068152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:30,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:30,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624781287] [2022-11-16 11:33:30,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:30,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:30,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:30,153 INFO L87 Difference]: Start difference. First operand 20697 states and 29577 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:33,050 INFO L93 Difference]: Finished difference Result 39101 states and 55563 transitions. [2022-11-16 11:33:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:33,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-11-16 11:33:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:33,077 INFO L225 Difference]: With dead ends: 39101 [2022-11-16 11:33:33,077 INFO L226 Difference]: Without dead ends: 20699 [2022-11-16 11:33:33,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:33,097 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:33,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2022-11-16 11:33:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 20697. [2022-11-16 11:33:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4148828219376661) internal successors, (29281), 20696 states have internal predecessors, (29281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29281 transitions. [2022-11-16 11:33:36,009 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29281 transitions. Word has length 78 [2022-11-16 11:33:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:36,009 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29281 transitions. [2022-11-16 11:33:36,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29281 transitions. [2022-11-16 11:33:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:33:36,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:36,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:36,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:33:36,012 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2022-11-16 11:33:36,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:36,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294269062] [2022-11-16 11:33:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:36,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:36,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294269062] [2022-11-16 11:33:36,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294269062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:36,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:36,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559047583] [2022-11-16 11:33:36,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:36,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:36,128 INFO L87 Difference]: Start difference. First operand 20697 states and 29281 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:37,608 INFO L93 Difference]: Finished difference Result 27584 states and 38975 transitions. [2022-11-16 11:33:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:37,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-16 11:33:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:37,618 INFO L225 Difference]: With dead ends: 27584 [2022-11-16 11:33:37,618 INFO L226 Difference]: Without dead ends: 9182 [2022-11-16 11:33:37,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:37,628 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:37,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9182 states. [2022-11-16 11:33:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9182 to 9174. [2022-11-16 11:33:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9174 states, 9172 states have (on average 1.4363279546445704) internal successors, (13174), 9173 states have internal predecessors, (13174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 13174 transitions. [2022-11-16 11:33:38,633 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 13174 transitions. Word has length 79 [2022-11-16 11:33:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:38,633 INFO L495 AbstractCegarLoop]: Abstraction has 9174 states and 13174 transitions. [2022-11-16 11:33:38,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 13174 transitions. [2022-11-16 11:33:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 11:33:38,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:38,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:38,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:33:38,636 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:38,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2022-11-16 11:33:38,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:38,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723503633] [2022-11-16 11:33:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:38,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:38,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723503633] [2022-11-16 11:33:38,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723503633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:38,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:38,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186855258] [2022-11-16 11:33:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:38,734 INFO L87 Difference]: Start difference. First operand 9174 states and 13174 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:39,300 INFO L93 Difference]: Finished difference Result 12610 states and 17960 transitions. [2022-11-16 11:33:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:39,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 11:33:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:39,306 INFO L225 Difference]: With dead ends: 12610 [2022-11-16 11:33:39,306 INFO L226 Difference]: Without dead ends: 5744 [2022-11-16 11:33:39,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:39,312 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:39,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2022-11-16 11:33:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5742. [2022-11-16 11:33:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5740 states have (on average 1.4526132404181185) internal successors, (8338), 5741 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 8338 transitions. [2022-11-16 11:33:39,876 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 8338 transitions. Word has length 80 [2022-11-16 11:33:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:39,876 INFO L495 AbstractCegarLoop]: Abstraction has 5742 states and 8338 transitions. [2022-11-16 11:33:39,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 8338 transitions. [2022-11-16 11:33:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 11:33:39,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:39,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:39,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:33:39,878 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:39,879 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2022-11-16 11:33:39,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:39,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704883120] [2022-11-16 11:33:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:39,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:39,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704883120] [2022-11-16 11:33:39,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704883120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:39,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:39,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:39,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856895394] [2022-11-16 11:33:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:39,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:39,976 INFO L87 Difference]: Start difference. First operand 5742 states and 8338 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:40,281 INFO L93 Difference]: Finished difference Result 7462 states and 10706 transitions. [2022-11-16 11:33:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:40,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-16 11:33:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:40,286 INFO L225 Difference]: With dead ends: 7462 [2022-11-16 11:33:40,287 INFO L226 Difference]: Without dead ends: 4028 [2022-11-16 11:33:40,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:40,291 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:40,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2022-11-16 11:33:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4026. [2022-11-16 11:33:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 4024 states have (on average 1.4776341948310139) internal successors, (5946), 4025 states have internal predecessors, (5946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 5946 transitions. [2022-11-16 11:33:40,554 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 5946 transitions. Word has length 82 [2022-11-16 11:33:40,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:40,555 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 5946 transitions. [2022-11-16 11:33:40,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:40,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 5946 transitions. [2022-11-16 11:33:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 11:33:40,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:40,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:40,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:33:40,557 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:40,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2022-11-16 11:33:40,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:40,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388562924] [2022-11-16 11:33:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:40,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:40,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388562924] [2022-11-16 11:33:40,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388562924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:40,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:40,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651769815] [2022-11-16 11:33:40,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:40,655 INFO L87 Difference]: Start difference. First operand 4026 states and 5946 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:40,891 INFO L93 Difference]: Finished difference Result 4888 states and 7118 transitions. [2022-11-16 11:33:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:40,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-16 11:33:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:40,895 INFO L225 Difference]: With dead ends: 4888 [2022-11-16 11:33:40,896 INFO L226 Difference]: Without dead ends: 3170 [2022-11-16 11:33:40,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:40,899 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:40,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-11-16 11:33:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3168. [2022-11-16 11:33:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3166 states have (on average 1.5044219835754895) internal successors, (4763), 3167 states have internal predecessors, (4763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4763 transitions. [2022-11-16 11:33:41,135 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4763 transitions. Word has length 84 [2022-11-16 11:33:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:41,135 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4763 transitions. [2022-11-16 11:33:41,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4763 transitions. [2022-11-16 11:33:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 11:33:41,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:41,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:41,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:33:41,137 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2022-11-16 11:33:41,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:41,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984231764] [2022-11-16 11:33:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:42,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984231764] [2022-11-16 11:33:42,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984231764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:33:42,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286732168] [2022-11-16 11:33:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:42,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:42,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:42,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:42,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:33:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:42,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:33:42,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:33:42,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:33:42,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286732168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:42,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:33:42,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-16 11:33:42,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371064267] [2022-11-16 11:33:42,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:42,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:33:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:42,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:33:42,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:33:42,795 INFO L87 Difference]: Start difference. First operand 3168 states and 4763 transitions. Second operand has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:47,230 INFO L93 Difference]: Finished difference Result 9561 states and 13188 transitions. [2022-11-16 11:33:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:33:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 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 86 [2022-11-16 11:33:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:47,239 INFO L225 Difference]: With dead ends: 9561 [2022-11-16 11:33:47,239 INFO L226 Difference]: Without dead ends: 8701 [2022-11-16 11:33:47,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=659, Invalid=2881, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 11:33:47,243 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 15341 mSDsluCounter, 6404 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15341 SdHoareTripleChecker+Valid, 7920 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:47,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15341 Valid, 7920 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:33:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8701 states. [2022-11-16 11:33:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8701 to 6504. [2022-11-16 11:33:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 6502 states have (on average 1.3854198708089818) internal successors, (9008), 6503 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 9008 transitions. [2022-11-16 11:33:48,062 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 9008 transitions. Word has length 86 [2022-11-16 11:33:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:48,062 INFO L495 AbstractCegarLoop]: Abstraction has 6504 states and 9008 transitions. [2022-11-16 11:33:48,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 9008 transitions. [2022-11-16 11:33:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 11:33:48,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:48,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:48,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:48,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:33:48,270 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:48,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1667542172, now seen corresponding path program 1 times [2022-11-16 11:33:48,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:48,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869168794] [2022-11-16 11:33:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:48,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:49,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869168794] [2022-11-16 11:33:49,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869168794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:33:49,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611531802] [2022-11-16 11:33:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:49,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:49,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:33:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:49,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:33:49,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:51,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:53,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611531802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:53,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:33:53,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2022-11-16 11:33:53,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571115219] [2022-11-16 11:33:53,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:53,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 11:33:53,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 11:33:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 11:33:53,144 INFO L87 Difference]: Start difference. First operand 6504 states and 9008 transitions. Second operand has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:40,714 INFO L93 Difference]: Finished difference Result 72640 states and 93724 transitions. [2022-11-16 11:34:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-11-16 11:34:40,714 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 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 87 [2022-11-16 11:34:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:40,786 INFO L225 Difference]: With dead ends: 72640 [2022-11-16 11:34:40,787 INFO L226 Difference]: Without dead ends: 68669 [2022-11-16 11:34:40,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23318 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=7220, Invalid=49662, Unknown=0, NotChecked=0, Total=56882 [2022-11-16 11:34:40,805 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 24929 mSDsluCounter, 17850 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24929 SdHoareTripleChecker+Valid, 19486 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:40,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24929 Valid, 19486 Invalid, 3720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:34:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68669 states. [2022-11-16 11:34:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68669 to 17653. [2022-11-16 11:34:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17653 states, 17651 states have (on average 1.3003229278794401) internal successors, (22952), 17652 states have internal predecessors, (22952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17653 states to 17653 states and 22952 transitions. [2022-11-16 11:34:45,237 INFO L78 Accepts]: Start accepts. Automaton has 17653 states and 22952 transitions. Word has length 87 [2022-11-16 11:34:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:45,237 INFO L495 AbstractCegarLoop]: Abstraction has 17653 states and 22952 transitions. [2022-11-16 11:34:45,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 17653 states and 22952 transitions. [2022-11-16 11:34:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 11:34:45,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:45,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:45,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:45,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:45,443 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:45,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1769142018, now seen corresponding path program 1 times [2022-11-16 11:34:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:45,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72924905] [2022-11-16 11:34:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:45,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:46,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:46,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72924905] [2022-11-16 11:34:46,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72924905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:46,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325514779] [2022-11-16 11:34:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:46,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:46,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:46,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:46,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:34:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:46,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:34:46,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:47,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:49,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325514779] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:49,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:49,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-11-16 11:34:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072320364] [2022-11-16 11:34:49,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:49,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:34:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:34:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:34:49,353 INFO L87 Difference]: Start difference. First operand 17653 states and 22952 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:03,785 INFO L93 Difference]: Finished difference Result 56281 states and 70543 transitions. [2022-11-16 11:35:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:35:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 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 88 [2022-11-16 11:35:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:03,831 INFO L225 Difference]: With dead ends: 56281 [2022-11-16 11:35:03,831 INFO L226 Difference]: Without dead ends: 42513 [2022-11-16 11:35:03,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=640, Invalid=2222, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 11:35:03,840 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 8420 mSDsluCounter, 8257 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8420 SdHoareTripleChecker+Valid, 9781 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:03,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8420 Valid, 9781 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:35:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42513 states. [2022-11-16 11:35:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42513 to 32343. [2022-11-16 11:35:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32343 states, 32341 states have (on average 1.2684518103954732) internal successors, (41023), 32342 states have internal predecessors, (41023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32343 states to 32343 states and 41023 transitions. [2022-11-16 11:35:12,685 INFO L78 Accepts]: Start accepts. Automaton has 32343 states and 41023 transitions. Word has length 88 [2022-11-16 11:35:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:12,685 INFO L495 AbstractCegarLoop]: Abstraction has 32343 states and 41023 transitions. [2022-11-16 11:35:12,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 32343 states and 41023 transitions. [2022-11-16 11:35:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 11:35:12,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:12,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:12,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:12,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:35:12,894 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1728911506, now seen corresponding path program 1 times [2022-11-16 11:35:12,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:12,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628120799] [2022-11-16 11:35:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:13,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:13,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628120799] [2022-11-16 11:35:13,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628120799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:13,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577990966] [2022-11-16 11:35:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:13,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:13,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:13,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:13,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:35:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:13,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:35:13,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:14,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:15,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577990966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:15,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:35:15,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-16 11:35:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422767152] [2022-11-16 11:35:15,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:15,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:35:15,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:35:15,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:35:15,517 INFO L87 Difference]: Start difference. First operand 32343 states and 41023 transitions. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:39,373 INFO L93 Difference]: Finished difference Result 70175 states and 88008 transitions. [2022-11-16 11:35:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:35:39,373 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 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 88 [2022-11-16 11:35:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:39,426 INFO L225 Difference]: With dead ends: 70175 [2022-11-16 11:35:39,426 INFO L226 Difference]: Without dead ends: 50559 [2022-11-16 11:35:39,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=886, Invalid=3274, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 11:35:39,440 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 25462 mSDsluCounter, 6958 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25462 SdHoareTripleChecker+Valid, 8545 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:39,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25462 Valid, 8545 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:35:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50559 states. [2022-11-16 11:35:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50559 to 30307. [2022-11-16 11:35:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30307 states, 30305 states have (on average 1.2573172743771655) internal successors, (38103), 30306 states have internal predecessors, (38103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30307 states to 30307 states and 38103 transitions. [2022-11-16 11:35:51,760 INFO L78 Accepts]: Start accepts. Automaton has 30307 states and 38103 transitions. Word has length 88 [2022-11-16 11:35:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:51,760 INFO L495 AbstractCegarLoop]: Abstraction has 30307 states and 38103 transitions. [2022-11-16 11:35:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 30307 states and 38103 transitions. [2022-11-16 11:35:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 11:35:51,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:51,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:51,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:51,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:51,969 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1760002960, now seen corresponding path program 1 times [2022-11-16 11:35:51,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:51,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419825831] [2022-11-16 11:35:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:52,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419825831] [2022-11-16 11:35:52,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419825831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:52,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098055821] [2022-11-16 11:35:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:52,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:52,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:52,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:52,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd17b07-1edf-446c-9ba7-f88c7cdc9888/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:35:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:52,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:35:52,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:53,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:54,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098055821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:54,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:35:54,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2022-11-16 11:35:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903981562] [2022-11-16 11:35:54,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:54,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:35:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:35:54,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:35:54,675 INFO L87 Difference]: Start difference. First operand 30307 states and 38103 transitions. Second operand has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:23,476 INFO L93 Difference]: Finished difference Result 84343 states and 104455 transitions. [2022-11-16 11:36:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:36:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 states have internal predecessors, (229), 0 states have call successors, (0), 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 89 [2022-11-16 11:36:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:23,560 INFO L225 Difference]: With dead ends: 84343 [2022-11-16 11:36:23,560 INFO L226 Difference]: Without dead ends: 59521 [2022-11-16 11:36:23,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=437, Invalid=1455, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 11:36:23,582 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 9983 mSDsluCounter, 8424 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9983 SdHoareTripleChecker+Valid, 9986 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:23,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9983 Valid, 9986 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:36:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59521 states.