./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label57.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a --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 16f5fbe4e4f43b4f458c808219051e20c4982642680d27057faf1e29b0e8c222 --- 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-b5237d8 [2022-11-21 16:32:05,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:32:05,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:32:05,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:32:05,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:32:05,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:32:05,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:32:05,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:32:05,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:32:05,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:32:05,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:32:05,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:32:05,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:32:05,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:32:05,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:32:05,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:32:05,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:32:05,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:32:05,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:32:05,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:32:05,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:32:05,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:32:05,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:32:05,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:32:05,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:32:05,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:32:05,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:32:05,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:32:05,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:32:05,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:32:05,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:32:05,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:32:05,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:32:05,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:32:05,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:32:05,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:32:05,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:32:05,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:32:05,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:32:05,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:32:05,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:32:05,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:32:06,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:32:06,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:32:06,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:32:06,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:32:06,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:32:06,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:32:06,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:32:06,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:32:06,008 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:32:06,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:32:06,010 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:32:06,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:32:06,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:32:06,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:32:06,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:32:06,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:32:06,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:32:06,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:32:06,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:32:06,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:32:06,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:32:06,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:32:06,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:32:06,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:32:06,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:06,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:32:06,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:32:06,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:32:06,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:32:06,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:32:06,016 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:32:06,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:32:06,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:32:06,017 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_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f5fbe4e4f43b4f458c808219051e20c4982642680d27057faf1e29b0e8c222 [2022-11-21 16:32:06,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:32:06,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:32:06,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:32:06,327 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:32:06,328 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:32:06,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem18_label57.c [2022-11-21 16:32:09,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:32:10,586 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:32:10,587 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/sv-benchmarks/c/eca-rers2012/Problem18_label57.c [2022-11-21 16:32:10,616 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/data/c8a72a06a/8195dbe17bd84370b4bd2bb447b92bab/FLAGdbd879915 [2022-11-21 16:32:10,639 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/data/c8a72a06a/8195dbe17bd84370b4bd2bb447b92bab [2022-11-21 16:32:10,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:32:10,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:32:10,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:10,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:32:10,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:32:10,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:10" (1/1) ... [2022-11-21 16:32:10,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2ac05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:10, skipping insertion in model container [2022-11-21 16:32:10,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:10" (1/1) ... [2022-11-21 16:32:10,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:32:10,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:32:11,055 WARN L237 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_27334990-7754-4197-85c1-4ac335e62a8c/sv-benchmarks/c/eca-rers2012/Problem18_label57.c[1255,1268] [2022-11-21 16:32:12,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:12,180 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:32:12,199 WARN L237 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_27334990-7754-4197-85c1-4ac335e62a8c/sv-benchmarks/c/eca-rers2012/Problem18_label57.c[1255,1268] [2022-11-21 16:32:12,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:12,724 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:32:12,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12 WrapperNode [2022-11-21 16:32:12,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:12,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:12,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:32:12,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:32:12,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:12,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,068 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-11-21 16:32:13,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:13,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:32:13,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:32:13,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:32:13,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:32:13,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:32:13,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:32:13,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:32:13,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (1/1) ... [2022-11-21 16:32:13,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:13,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:13,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:32:13,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:32:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:32:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:32:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:32:13,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:32:13,581 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:32:13,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:32:18,447 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:32:18,511 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:32:18,512 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:32:18,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:18 BoogieIcfgContainer [2022-11-21 16:32:18,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:32:18,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:32:18,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:32:18,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:32:18,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:32:10" (1/3) ... [2022-11-21 16:32:18,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f74ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:18, skipping insertion in model container [2022-11-21 16:32:18,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:12" (2/3) ... [2022-11-21 16:32:18,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f74ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:18, skipping insertion in model container [2022-11-21 16:32:18,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:18" (3/3) ... [2022-11-21 16:32:18,528 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label57.c [2022-11-21 16:32:18,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:32:18,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:32:18,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:32:18,694 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;@2bb0feb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:32:18,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:32:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:18,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 16:32:18,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:32:18,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:18,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:32:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 297966002, now seen corresponding path program 1 times [2022-11-21 16:32:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:18,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753528838] [2022-11-21 16:32:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:19,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753528838] [2022-11-21 16:32:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753528838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:19,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:19,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:32:19,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121621524] [2022-11-21 16:32:19,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:32:19,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:32:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:32:19,076 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:32:24,423 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2022-11-21 16:32:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:32:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-21 16:32:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:32:24,451 INFO L225 Difference]: With dead ends: 2205 [2022-11-21 16:32:24,452 INFO L226 Difference]: Without dead ends: 1384 [2022-11-21 16:32:24,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:32:24,463 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 740 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:32:24,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 291 Invalid, 2985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [967 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-21 16:32:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-21 16:32:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-21 16:32:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.7339117859725235) internal successors, (2398), 1383 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2398 transitions. [2022-11-21 16:32:24,598 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2398 transitions. Word has length 8 [2022-11-21 16:32:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:32:24,599 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2398 transitions. [2022-11-21 16:32:24,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2398 transitions. [2022-11-21 16:32:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:32:24,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:32:24,603 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:32:24,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:32:24,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:32:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1296644696, now seen corresponding path program 1 times [2022-11-21 16:32:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:24,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554773380] [2022-11-21 16:32:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:24,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:25,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554773380] [2022-11-21 16:32:25,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554773380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:25,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:25,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167284446] [2022-11-21 16:32:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:25,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:25,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:25,137 INFO L87 Difference]: Start difference. First operand 1384 states and 2398 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:32:32,073 INFO L93 Difference]: Finished difference Result 4842 states and 8275 transitions. [2022-11-21 16:32:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2022-11-21 16:32:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:32:32,091 INFO L225 Difference]: With dead ends: 4842 [2022-11-21 16:32:32,091 INFO L226 Difference]: Without dead ends: 3460 [2022-11-21 16:32:32,096 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 [2022-11-21 16:32:32,098 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 2036 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 4688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:32:32,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 135 Invalid, 4688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1420 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-21 16:32:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-11-21 16:32:32,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3454. [2022-11-21 16:32:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3453 states have (on average 1.5409788589632203) internal successors, (5321), 3453 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5321 transitions. [2022-11-21 16:32:32,232 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5321 transitions. Word has length 77 [2022-11-21 16:32:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:32:32,235 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 5321 transitions. [2022-11-21 16:32:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5321 transitions. [2022-11-21 16:32:32,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-21 16:32:32,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:32:32,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:32,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:32:32,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:32:32,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash 782408697, now seen corresponding path program 1 times [2022-11-21 16:32:32,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:32,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746466602] [2022-11-21 16:32:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:32,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:32,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:32,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746466602] [2022-11-21 16:32:32,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746466602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:32,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:32,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907979481] [2022-11-21 16:32:32,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:32,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:32:32,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:32:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:32:32,655 INFO L87 Difference]: Start difference. First operand 3454 states and 5321 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:32:36,780 INFO L93 Difference]: Finished difference Result 8286 states and 13162 transitions. [2022-11-21 16:32:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:32:36,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-11-21 16:32:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:32:36,805 INFO L225 Difference]: With dead ends: 8286 [2022-11-21 16:32:36,806 INFO L226 Difference]: Without dead ends: 4834 [2022-11-21 16:32:36,810 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 [2022-11-21 16:32:36,812 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 715 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:32:36,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 160 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 16:32:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-21 16:32:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-21 16:32:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 1.5739706186633562) internal successors, (7607), 4833 states have internal predecessors, (7607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 7607 transitions. [2022-11-21 16:32:36,936 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 7607 transitions. Word has length 126 [2022-11-21 16:32:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:32:36,938 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 7607 transitions. [2022-11-21 16:32:36,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 7607 transitions. [2022-11-21 16:32:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-21 16:32:36,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:32:36,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:32:36,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:32:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1580356840, now seen corresponding path program 1 times [2022-11-21 16:32:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:36,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230032842] [2022-11-21 16:32:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:32:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:37,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230032842] [2022-11-21 16:32:37,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230032842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:37,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:37,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:37,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37161696] [2022-11-21 16:32:37,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:37,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:37,818 INFO L87 Difference]: Start difference. First operand 4834 states and 7607 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:32:44,149 INFO L93 Difference]: Finished difference Result 15186 states and 23945 transitions. [2022-11-21 16:32:44,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:32:44,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 185 [2022-11-21 16:32:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:32:44,191 INFO L225 Difference]: With dead ends: 15186 [2022-11-21 16:32:44,191 INFO L226 Difference]: Without dead ends: 10354 [2022-11-21 16:32:44,199 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 [2022-11-21 16:32:44,200 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1923 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 5006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:32:44,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 647 Invalid, 5006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-21 16:32:44,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10354 states. [2022-11-21 16:32:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10354 to 8974. [2022-11-21 16:32:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8974 states, 8973 states have (on average 1.3633121586983172) internal successors, (12233), 8973 states have internal predecessors, (12233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8974 states to 8974 states and 12233 transitions. [2022-11-21 16:32:44,431 INFO L78 Accepts]: Start accepts. Automaton has 8974 states and 12233 transitions. Word has length 185 [2022-11-21 16:32:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:32:44,433 INFO L495 AbstractCegarLoop]: Abstraction has 8974 states and 12233 transitions. [2022-11-21 16:32:44,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8974 states and 12233 transitions. [2022-11-21 16:32:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-21 16:32:44,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:32:44,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:44,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:32:44,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:32:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 51840469, now seen corresponding path program 1 times [2022-11-21 16:32:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:44,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569726397] [2022-11-21 16:32:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:44,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:45,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:45,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569726397] [2022-11-21 16:32:45,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569726397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:45,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:45,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:45,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552439514] [2022-11-21 16:32:45,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:45,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:45,154 INFO L87 Difference]: Start difference. First operand 8974 states and 12233 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:32:49,788 INFO L93 Difference]: Finished difference Result 21449 states and 29330 transitions. [2022-11-21 16:32:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:32:49,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 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 274 [2022-11-21 16:32:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:32:49,863 INFO L225 Difference]: With dead ends: 21449 [2022-11-21 16:32:49,863 INFO L226 Difference]: Without dead ends: 12424 [2022-11-21 16:32:49,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:49,877 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 531 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:32:49,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 636 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 16:32:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12424 states. [2022-11-21 16:32:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12424 to 11734. [2022-11-21 16:32:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11733 states have (on average 1.2112844114889627) internal successors, (14212), 11733 states have internal predecessors, (14212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 14212 transitions. [2022-11-21 16:32:50,124 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 14212 transitions. Word has length 274 [2022-11-21 16:32:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:32:50,125 INFO L495 AbstractCegarLoop]: Abstraction has 11734 states and 14212 transitions. [2022-11-21 16:32:50,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 14212 transitions. [2022-11-21 16:32:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2022-11-21 16:32:50,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:32:50,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:50,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:32:50,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:32:50,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1743460247, now seen corresponding path program 1 times [2022-11-21 16:32:50,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:50,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128965234] [2022-11-21 16:32:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:50,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-11-21 16:32:51,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:51,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128965234] [2022-11-21 16:32:51,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128965234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:51,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:51,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:32:51,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600912666] [2022-11-21 16:32:51,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:51,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:32:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:32:51,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:32:51,535 INFO L87 Difference]: Start difference. First operand 11734 states and 14212 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:55,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:32:55,030 INFO L93 Difference]: Finished difference Result 28296 states and 35364 transitions. [2022-11-21 16:32:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:32:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 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 892 [2022-11-21 16:32:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:32:55,082 INFO L225 Difference]: With dead ends: 28296 [2022-11-21 16:32:55,082 INFO L226 Difference]: Without dead ends: 16564 [2022-11-21 16:32:55,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:32:55,100 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 215 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:32:55,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 407 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 16:32:55,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16564 states. [2022-11-21 16:32:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16564 to 13804. [2022-11-21 16:32:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13804 states, 13803 states have (on average 1.1922045932043759) internal successors, (16456), 13803 states have internal predecessors, (16456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13804 states to 13804 states and 16456 transitions. [2022-11-21 16:32:55,365 INFO L78 Accepts]: Start accepts. Automaton has 13804 states and 16456 transitions. Word has length 892 [2022-11-21 16:32:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:32:55,367 INFO L495 AbstractCegarLoop]: Abstraction has 13804 states and 16456 transitions. [2022-11-21 16:32:55,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13804 states and 16456 transitions. [2022-11-21 16:32:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2022-11-21 16:32:55,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:32:55,411 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:55,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:32:55,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:32:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash -501134280, now seen corresponding path program 1 times [2022-11-21 16:32:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:55,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733024827] [2022-11-21 16:32:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:55,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2022-11-21 16:32:56,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:56,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733024827] [2022-11-21 16:32:56,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733024827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:56,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:56,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:32:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418654888] [2022-11-21 16:32:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:56,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:32:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:56,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:32:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:32:56,656 INFO L87 Difference]: Start difference. First operand 13804 states and 16456 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:00,189 INFO L93 Difference]: Finished difference Result 32436 states and 38835 transitions. [2022-11-21 16:33:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:00,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 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 907 [2022-11-21 16:33:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:00,228 INFO L225 Difference]: With dead ends: 32436 [2022-11-21 16:33:00,228 INFO L226 Difference]: Without dead ends: 18634 [2022-11-21 16:33:00,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:00,241 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:00,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 82 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 16:33:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2022-11-21 16:33:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18634. [2022-11-21 16:33:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18634 states, 18633 states have (on average 1.1818816078999623) internal successors, (22022), 18633 states have internal predecessors, (22022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18634 states to 18634 states and 22022 transitions. [2022-11-21 16:33:00,569 INFO L78 Accepts]: Start accepts. Automaton has 18634 states and 22022 transitions. Word has length 907 [2022-11-21 16:33:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:00,571 INFO L495 AbstractCegarLoop]: Abstraction has 18634 states and 22022 transitions. [2022-11-21 16:33:00,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18634 states and 22022 transitions. [2022-11-21 16:33:00,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2022-11-21 16:33:00,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:00,583 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:33:00,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash -458920639, now seen corresponding path program 1 times [2022-11-21 16:33:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:00,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713026816] [2022-11-21 16:33:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:00,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-21 16:33:01,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:01,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713026816] [2022-11-21 16:33:01,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713026816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:01,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:01,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162533935] [2022-11-21 16:33:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:01,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:01,580 INFO L87 Difference]: Start difference. First operand 18634 states and 22022 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:04,974 INFO L93 Difference]: Finished difference Result 42786 states and 50992 transitions. [2022-11-21 16:33:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:04,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 908 [2022-11-21 16:33:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:05,028 INFO L225 Difference]: With dead ends: 42786 [2022-11-21 16:33:05,029 INFO L226 Difference]: Without dead ends: 24154 [2022-11-21 16:33:05,049 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 [2022-11-21 16:33:05,050 INFO L413 NwaCegarLoop]: 1111 mSDtfsCounter, 686 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:05,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1118 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 16:33:05,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24154 states. [2022-11-21 16:33:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24154 to 24154. [2022-11-21 16:33:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24154 states, 24153 states have (on average 1.1665631598559185) internal successors, (28176), 24153 states have internal predecessors, (28176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24154 states to 24154 states and 28176 transitions. [2022-11-21 16:33:05,512 INFO L78 Accepts]: Start accepts. Automaton has 24154 states and 28176 transitions. Word has length 908 [2022-11-21 16:33:05,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:05,513 INFO L495 AbstractCegarLoop]: Abstraction has 24154 states and 28176 transitions. [2022-11-21 16:33:05,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 24154 states and 28176 transitions. [2022-11-21 16:33:05,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2022-11-21 16:33:05,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:05,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:33:05,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1548785793, now seen corresponding path program 1 times [2022-11-21 16:33:05,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870514581] [2022-11-21 16:33:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-21 16:33:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:07,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870514581] [2022-11-21 16:33:07,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870514581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:07,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:07,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941740000] [2022-11-21 16:33:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:07,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:07,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:07,619 INFO L87 Difference]: Start difference. First operand 24154 states and 28176 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:10,879 INFO L93 Difference]: Finished difference Result 48996 states and 57043 transitions. [2022-11-21 16:33:10,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:10,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 929 [2022-11-21 16:33:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:10,928 INFO L225 Difference]: With dead ends: 48996 [2022-11-21 16:33:10,928 INFO L226 Difference]: Without dead ends: 24844 [2022-11-21 16:33:10,943 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 [2022-11-21 16:33:10,944 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 586 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:10,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1013 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 16:33:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2022-11-21 16:33:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 24844. [2022-11-21 16:33:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24844 states, 24843 states have (on average 1.1398381837942277) internal successors, (28317), 24843 states have internal predecessors, (28317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 28317 transitions. [2022-11-21 16:33:11,320 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 28317 transitions. Word has length 929 [2022-11-21 16:33:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:11,326 INFO L495 AbstractCegarLoop]: Abstraction has 24844 states and 28317 transitions. [2022-11-21 16:33:11,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 28317 transitions. [2022-11-21 16:33:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2022-11-21 16:33:11,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:11,339 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:11,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:33:11,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1984280968, now seen corresponding path program 1 times [2022-11-21 16:33:11,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:11,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18443186] [2022-11-21 16:33:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:11,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-21 16:33:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:13,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18443186] [2022-11-21 16:33:13,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18443186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:13,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:13,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:13,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731891352] [2022-11-21 16:33:13,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:13,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:13,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:13,162 INFO L87 Difference]: Start difference. First operand 24844 states and 28317 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:16,310 INFO L93 Difference]: Finished difference Result 52446 states and 59909 transitions. [2022-11-21 16:33:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 936 [2022-11-21 16:33:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:16,353 INFO L225 Difference]: With dead ends: 52446 [2022-11-21 16:33:16,354 INFO L226 Difference]: Without dead ends: 27604 [2022-11-21 16:33:16,372 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 [2022-11-21 16:33:16,373 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 587 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:16,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 354 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 16:33:16,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27604 states. [2022-11-21 16:33:16,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27604 to 27604. [2022-11-21 16:33:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27604 states, 27603 states have (on average 1.1384632105205956) internal successors, (31425), 27603 states have internal predecessors, (31425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27604 states to 27604 states and 31425 transitions. [2022-11-21 16:33:16,956 INFO L78 Accepts]: Start accepts. Automaton has 27604 states and 31425 transitions. Word has length 936 [2022-11-21 16:33:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:16,958 INFO L495 AbstractCegarLoop]: Abstraction has 27604 states and 31425 transitions. [2022-11-21 16:33:16,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 27604 states and 31425 transitions. [2022-11-21 16:33:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2022-11-21 16:33:16,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:16,983 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:16,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:33:16,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:16,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:16,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1049848202, now seen corresponding path program 1 times [2022-11-21 16:33:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:16,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008311968] [2022-11-21 16:33:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-21 16:33:18,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:18,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008311968] [2022-11-21 16:33:18,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008311968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:18,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:18,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291620874] [2022-11-21 16:33:18,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:18,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:18,074 INFO L87 Difference]: Start difference. First operand 27604 states and 31425 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:21,307 INFO L93 Difference]: Finished difference Result 54516 states and 62154 transitions. [2022-11-21 16:33:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:21,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 1015 [2022-11-21 16:33:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:21,344 INFO L225 Difference]: With dead ends: 54516 [2022-11-21 16:33:21,345 INFO L226 Difference]: Without dead ends: 26914 [2022-11-21 16:33:21,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:21,364 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:21,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1091 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 16:33:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26914 states. [2022-11-21 16:33:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26914 to 26914. [2022-11-21 16:33:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26914 states, 26913 states have (on average 1.1112101958161484) internal successors, (29906), 26913 states have internal predecessors, (29906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26914 states to 26914 states and 29906 transitions. [2022-11-21 16:33:21,739 INFO L78 Accepts]: Start accepts. Automaton has 26914 states and 29906 transitions. Word has length 1015 [2022-11-21 16:33:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:21,740 INFO L495 AbstractCegarLoop]: Abstraction has 26914 states and 29906 transitions. [2022-11-21 16:33:21,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 26914 states and 29906 transitions. [2022-11-21 16:33:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2022-11-21 16:33:21,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:21,754 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:21,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:33:21,755 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1751069095, now seen corresponding path program 1 times [2022-11-21 16:33:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:21,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676162119] [2022-11-21 16:33:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-11-21 16:33:23,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:23,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676162119] [2022-11-21 16:33:23,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676162119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:23,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:23,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:33:23,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513323696] [2022-11-21 16:33:23,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:33:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:33:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:33:23,646 INFO L87 Difference]: Start difference. First operand 26914 states and 29906 transitions. Second operand has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:27,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:27,863 INFO L93 Difference]: Finished difference Result 62268 states and 69389 transitions. [2022-11-21 16:33:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:33:27,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 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 1017 [2022-11-21 16:33:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:27,907 INFO L225 Difference]: With dead ends: 62268 [2022-11-21 16:33:27,907 INFO L226 Difference]: Without dead ends: 30526 [2022-11-21 16:33:27,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:33:27,928 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 712 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 4028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:27,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1117 Invalid, 4028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3375 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 16:33:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30526 states. [2022-11-21 16:33:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30526 to 29674. [2022-11-21 16:33:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29674 states, 29673 states have (on average 1.0670980352509014) internal successors, (31664), 29673 states have internal predecessors, (31664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29674 states to 29674 states and 31664 transitions. [2022-11-21 16:33:28,556 INFO L78 Accepts]: Start accepts. Automaton has 29674 states and 31664 transitions. Word has length 1017 [2022-11-21 16:33:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:28,557 INFO L495 AbstractCegarLoop]: Abstraction has 29674 states and 31664 transitions. [2022-11-21 16:33:28,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 29674 states and 31664 transitions. [2022-11-21 16:33:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2022-11-21 16:33:28,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:28,585 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:28,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:33:28,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:28,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1068446265, now seen corresponding path program 1 times [2022-11-21 16:33:28,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:28,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536638292] [2022-11-21 16:33:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:28,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 390 proven. 650 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-21 16:33:31,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:31,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536638292] [2022-11-21 16:33:31,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536638292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:31,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728243976] [2022-11-21 16:33:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:31,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:31,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:31,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:31,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:33:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:31,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:33:31,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-21 16:33:32,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:32,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728243976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:32,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:32,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-21 16:33:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083025281] [2022-11-21 16:33:32,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:32,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:32,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:32,330 INFO L87 Difference]: Start difference. First operand 29674 states and 31664 transitions. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:35,512 INFO L93 Difference]: Finished difference Result 72456 states and 78065 transitions. [2022-11-21 16:33:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:35,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 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 1096 [2022-11-21 16:33:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:35,554 INFO L225 Difference]: With dead ends: 72456 [2022-11-21 16:33:35,554 INFO L226 Difference]: Without dead ends: 42784 [2022-11-21 16:33:35,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1096 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:35,577 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 656 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:35,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 161 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 16:33:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42784 states. [2022-11-21 16:33:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42784 to 42784. [2022-11-21 16:33:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42784 states, 42783 states have (on average 1.0667321132225416) internal successors, (45638), 42783 states have internal predecessors, (45638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42784 states to 42784 states and 45638 transitions. [2022-11-21 16:33:36,027 INFO L78 Accepts]: Start accepts. Automaton has 42784 states and 45638 transitions. Word has length 1096 [2022-11-21 16:33:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:36,028 INFO L495 AbstractCegarLoop]: Abstraction has 42784 states and 45638 transitions. [2022-11-21 16:33:36,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 42784 states and 45638 transitions. [2022-11-21 16:33:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2022-11-21 16:33:36,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:36,045 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:36,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:36,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:36,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash -326550510, now seen corresponding path program 1 times [2022-11-21 16:33:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:36,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976507627] [2022-11-21 16:33:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:36,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 746 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-21 16:33:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976507627] [2022-11-21 16:33:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976507627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:38,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435253208] [2022-11-21 16:33:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:38,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:38,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:38,077 INFO L87 Difference]: Start difference. First operand 42784 states and 45638 transitions. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:42,270 INFO L93 Difference]: Finished difference Result 85566 states and 91274 transitions. [2022-11-21 16:33:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:33:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 1135 [2022-11-21 16:33:42,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:42,320 INFO L225 Difference]: With dead ends: 85566 [2022-11-21 16:33:42,320 INFO L226 Difference]: Without dead ends: 42784 [2022-11-21 16:33:42,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:42,345 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 810 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:42,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 69 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 16:33:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42784 states. [2022-11-21 16:33:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42784 to 42784. [2022-11-21 16:33:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42784 states, 42783 states have (on average 1.066428254213122) internal successors, (45625), 42783 states have internal predecessors, (45625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42784 states to 42784 states and 45625 transitions. [2022-11-21 16:33:42,927 INFO L78 Accepts]: Start accepts. Automaton has 42784 states and 45625 transitions. Word has length 1135 [2022-11-21 16:33:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:42,928 INFO L495 AbstractCegarLoop]: Abstraction has 42784 states and 45625 transitions. [2022-11-21 16:33:42,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 42784 states and 45625 transitions. [2022-11-21 16:33:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1167 [2022-11-21 16:33:42,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:42,947 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:42,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:33:42,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1312196664, now seen corresponding path program 1 times [2022-11-21 16:33:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:42,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065957062] [2022-11-21 16:33:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:42,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2022-11-21 16:33:43,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:43,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065957062] [2022-11-21 16:33:43,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065957062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:43,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:43,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:43,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66553132] [2022-11-21 16:33:43,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:43,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:43,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:43,623 INFO L87 Difference]: Start difference. First operand 42784 states and 45625 transitions. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:46,872 INFO L93 Difference]: Finished difference Result 109026 states and 116706 transitions. [2022-11-21 16:33:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:46,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 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 1166 [2022-11-21 16:33:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:46,940 INFO L225 Difference]: With dead ends: 109026 [2022-11-21 16:33:46,940 INFO L226 Difference]: Without dead ends: 66244 [2022-11-21 16:33:46,964 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 [2022-11-21 16:33:46,965 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 721 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:46,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 115 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 16:33:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66244 states. [2022-11-21 16:33:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66244 to 65554. [2022-11-21 16:33:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65554 states, 65553 states have (on average 1.067792473265907) internal successors, (69997), 65553 states have internal predecessors, (69997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65554 states to 65554 states and 69997 transitions. [2022-11-21 16:33:47,647 INFO L78 Accepts]: Start accepts. Automaton has 65554 states and 69997 transitions. Word has length 1166 [2022-11-21 16:33:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:47,648 INFO L495 AbstractCegarLoop]: Abstraction has 65554 states and 69997 transitions. [2022-11-21 16:33:47,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 65554 states and 69997 transitions. [2022-11-21 16:33:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1316 [2022-11-21 16:33:47,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:47,676 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:47,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:33:47,677 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:47,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash 902395369, now seen corresponding path program 1 times [2022-11-21 16:33:47,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:47,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191981177] [2022-11-21 16:33:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:47,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 519 proven. 786 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-21 16:33:50,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191981177] [2022-11-21 16:33:50,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191981177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049256838] [2022-11-21 16:33:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:50,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:50,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:50,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:50,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:33:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:51,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:33:51,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 820 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-21 16:33:52,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:52,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049256838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:52,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:52,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-21 16:33:52,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480729938] [2022-11-21 16:33:52,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:52,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:52,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:33:52,143 INFO L87 Difference]: Start difference. First operand 65554 states and 69997 transitions. Second operand has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:33:55,268 INFO L93 Difference]: Finished difference Result 136626 states and 145583 transitions. [2022-11-21 16:33:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 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 1315 [2022-11-21 16:33:55,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:33:55,355 INFO L225 Difference]: With dead ends: 136626 [2022-11-21 16:33:55,356 INFO L226 Difference]: Without dead ends: 65554 [2022-11-21 16:33:55,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1320 GetRequests, 1315 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:33:55,386 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 413 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:33:55,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 873 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 16:33:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65554 states. [2022-11-21 16:33:56,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65554 to 65554. [2022-11-21 16:33:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65554 states, 65553 states have (on average 1.0517138803716077) internal successors, (68943), 65553 states have internal predecessors, (68943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65554 states to 65554 states and 68943 transitions. [2022-11-21 16:33:56,259 INFO L78 Accepts]: Start accepts. Automaton has 65554 states and 68943 transitions. Word has length 1315 [2022-11-21 16:33:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:33:56,260 INFO L495 AbstractCegarLoop]: Abstraction has 65554 states and 68943 transitions. [2022-11-21 16:33:56,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:56,261 INFO L276 IsEmpty]: Start isEmpty. Operand 65554 states and 68943 transitions. [2022-11-21 16:33:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1577 [2022-11-21 16:33:56,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:33:56,613 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:56,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 16:33:56,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:33:56,828 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:33:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:56,829 INFO L85 PathProgramCache]: Analyzing trace with hash 975711382, now seen corresponding path program 1 times [2022-11-21 16:33:56,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:56,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505870047] [2022-11-21 16:33:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:56,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2502 backedges. 680 proven. 1496 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-21 16:33:59,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505870047] [2022-11-21 16:33:59,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505870047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:34:00,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033839676] [2022-11-21 16:34:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:00,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:00,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:34:00,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:34:00,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:34:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:00,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:34:00,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:34:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2502 backedges. 1437 proven. 0 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2022-11-21 16:34:01,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:34:01,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033839676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:01,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:34:01,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-21 16:34:01,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931421726] [2022-11-21 16:34:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:01,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:34:01,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:34:01,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:34:01,688 INFO L87 Difference]: Start difference. First operand 65554 states and 68943 transitions. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:34:04,675 INFO L93 Difference]: Finished difference Result 130416 states and 137193 transitions. [2022-11-21 16:34:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:34:04,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 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 1576 [2022-11-21 16:34:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:34:04,741 INFO L225 Difference]: With dead ends: 130416 [2022-11-21 16:34:04,741 INFO L226 Difference]: Without dead ends: 65554 [2022-11-21 16:34:04,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:34:04,777 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 348 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:34:04,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 888 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 16:34:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65554 states. [2022-11-21 16:34:05,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65554 to 64174. [2022-11-21 16:34:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64174 states, 64173 states have (on average 1.0368379224907671) internal successors, (66537), 64173 states have internal predecessors, (66537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64174 states to 64174 states and 66537 transitions. [2022-11-21 16:34:05,947 INFO L78 Accepts]: Start accepts. Automaton has 64174 states and 66537 transitions. Word has length 1576 [2022-11-21 16:34:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:34:05,948 INFO L495 AbstractCegarLoop]: Abstraction has 64174 states and 66537 transitions. [2022-11-21 16:34:05,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 64174 states and 66537 transitions. [2022-11-21 16:34:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1607 [2022-11-21 16:34:05,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:34:05,992 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:06,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:34:06,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:34:06,193 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:34:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1352955096, now seen corresponding path program 1 times [2022-11-21 16:34:06,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:06,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229330103] [2022-11-21 16:34:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2125 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 2094 trivial. 0 not checked. [2022-11-21 16:34:09,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229330103] [2022-11-21 16:34:09,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229330103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:09,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:09,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:34:09,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587736827] [2022-11-21 16:34:09,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:34:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:09,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:34:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:34:09,541 INFO L87 Difference]: Start difference. First operand 64174 states and 66537 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:12,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:34:12,660 INFO L93 Difference]: Finished difference Result 138006 states and 143273 transitions. [2022-11-21 16:34:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:34:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 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 1606 [2022-11-21 16:34:12,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:34:12,732 INFO L225 Difference]: With dead ends: 138006 [2022-11-21 16:34:12,732 INFO L226 Difference]: Without dead ends: 74524 [2022-11-21 16:34:12,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:34:12,760 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 727 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:34:12,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 76 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 16:34:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74524 states. [2022-11-21 16:34:13,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74524 to 72454. [2022-11-21 16:34:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72454 states, 72453 states have (on average 1.0366306433135963) internal successors, (75107), 72453 states have internal predecessors, (75107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72454 states to 72454 states and 75107 transitions. [2022-11-21 16:34:13,705 INFO L78 Accepts]: Start accepts. Automaton has 72454 states and 75107 transitions. Word has length 1606 [2022-11-21 16:34:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:34:13,706 INFO L495 AbstractCegarLoop]: Abstraction has 72454 states and 75107 transitions. [2022-11-21 16:34:13,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 72454 states and 75107 transitions. [2022-11-21 16:34:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1620 [2022-11-21 16:34:14,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:34:14,129 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:14,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:34:14,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:34:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1005346776, now seen corresponding path program 1 times [2022-11-21 16:34:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:14,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199292842] [2022-11-21 16:34:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:14,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2766 backedges. 2084 proven. 107 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-21 16:34:16,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:16,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199292842] [2022-11-21 16:34:16,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199292842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:34:16,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469331071] [2022-11-21 16:34:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:16,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:16,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:34:16,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:34:16,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:34:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:16,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:34:16,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:34:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2766 backedges. 1865 proven. 0 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2022-11-21 16:34:17,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:34:17,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469331071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:17,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:34:17,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-21 16:34:17,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12185041] [2022-11-21 16:34:17,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:17,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:34:17,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:34:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:34:17,487 INFO L87 Difference]: Start difference. First operand 72454 states and 75107 transitions. Second operand has 3 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:34:20,800 INFO L93 Difference]: Finished difference Result 144216 states and 149521 transitions. [2022-11-21 16:34:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:34:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 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 1619 [2022-11-21 16:34:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:34:20,891 INFO L225 Difference]: With dead ends: 144216 [2022-11-21 16:34:20,892 INFO L226 Difference]: Without dead ends: 72454 [2022-11-21 16:34:20,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1619 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:34:20,932 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 456 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:34:20,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 879 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 16:34:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72454 states. [2022-11-21 16:34:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72454 to 69694. [2022-11-21 16:34:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69694 states, 69693 states have (on average 1.0334036416856787) internal successors, (72021), 69693 states have internal predecessors, (72021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69694 states to 69694 states and 72021 transitions. [2022-11-21 16:34:22,223 INFO L78 Accepts]: Start accepts. Automaton has 69694 states and 72021 transitions. Word has length 1619 [2022-11-21 16:34:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:34:22,224 INFO L495 AbstractCegarLoop]: Abstraction has 69694 states and 72021 transitions. [2022-11-21 16:34:22,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 69694 states and 72021 transitions. [2022-11-21 16:34:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1709 [2022-11-21 16:34:22,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:34:22,288 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:22,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:34:22,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:22,497 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:34:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:22,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2095934518, now seen corresponding path program 1 times [2022-11-21 16:34:22,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:22,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433322161] [2022-11-21 16:34:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2814 backedges. 1960 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2022-11-21 16:34:24,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:24,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433322161] [2022-11-21 16:34:24,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433322161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:24,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:24,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:34:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981151615] [2022-11-21 16:34:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:24,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:34:24,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:24,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:34:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:34:24,025 INFO L87 Difference]: Start difference. First operand 69694 states and 72021 transitions. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:34:27,202 INFO L93 Difference]: Finished difference Result 159396 states and 164792 transitions. [2022-11-21 16:34:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:34:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 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 1708 [2022-11-21 16:34:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:34:27,290 INFO L225 Difference]: With dead ends: 159396 [2022-11-21 16:34:27,290 INFO L226 Difference]: Without dead ends: 90394 [2022-11-21 16:34:27,327 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 [2022-11-21 16:34:27,329 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 618 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:34:27,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 230 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 16:34:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90394 states. [2022-11-21 16:34:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90394 to 90394. [2022-11-21 16:34:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90394 states, 90393 states have (on average 1.0312745455953447) internal successors, (93220), 90393 states have internal predecessors, (93220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90394 states to 90394 states and 93220 transitions. [2022-11-21 16:34:28,883 INFO L78 Accepts]: Start accepts. Automaton has 90394 states and 93220 transitions. Word has length 1708 [2022-11-21 16:34:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:34:28,884 INFO L495 AbstractCegarLoop]: Abstraction has 90394 states and 93220 transitions. [2022-11-21 16:34:28,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 90394 states and 93220 transitions. [2022-11-21 16:34:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1762 [2022-11-21 16:34:28,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:34:28,973 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:28,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:34:28,973 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:34:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 999929530, now seen corresponding path program 1 times [2022-11-21 16:34:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:28,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633857506] [2022-11-21 16:34:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 2162 proven. 581 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-11-21 16:34:33,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:33,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633857506] [2022-11-21 16:34:33,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633857506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:34:33,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226990151] [2022-11-21 16:34:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:33,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:33,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:34:33,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:34:33,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:34:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:33,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:34:33,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:34:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 2168 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-11-21 16:34:36,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:34:36,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226990151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:36,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:34:36,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-11-21 16:34:36,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430271581] [2022-11-21 16:34:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:36,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:34:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:34:36,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:34:36,211 INFO L87 Difference]: Start difference. First operand 90394 states and 93220 transitions. Second operand has 4 states, 4 states have (on average 254.75) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:34:40,917 INFO L93 Difference]: Finished difference Result 192516 states and 198616 transitions. [2022-11-21 16:34:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:34:40,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.75) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 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 1761 [2022-11-21 16:34:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:34:41,030 INFO L225 Difference]: With dead ends: 192516 [2022-11-21 16:34:41,031 INFO L226 Difference]: Without dead ends: 102814 [2022-11-21 16:34:41,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1759 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:34:41,061 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1005 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:34:41,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 66 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 16:34:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102814 states. [2022-11-21 16:34:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102814 to 93844. [2022-11-21 16:34:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93844 states, 93843 states have (on average 1.0317551655424486) internal successors, (96823), 93843 states have internal predecessors, (96823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93844 states to 93844 states and 96823 transitions. [2022-11-21 16:34:42,531 INFO L78 Accepts]: Start accepts. Automaton has 93844 states and 96823 transitions. Word has length 1761 [2022-11-21 16:34:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:34:42,533 INFO L495 AbstractCegarLoop]: Abstraction has 93844 states and 96823 transitions. [2022-11-21 16:34:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.75) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 93844 states and 96823 transitions. [2022-11-21 16:34:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1865 [2022-11-21 16:34:42,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:34:42,630 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:42,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:34:42,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:42,832 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:34:42,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash -256380453, now seen corresponding path program 1 times [2022-11-21 16:34:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:42,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706010447] [2022-11-21 16:34:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1020 proven. 1977 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-21 16:34:47,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:47,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706010447] [2022-11-21 16:34:47,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706010447] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:34:47,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865248905] [2022-11-21 16:34:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:47,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:47,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:34:47,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:34:47,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:34:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:48,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:34:48,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:34:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1020 proven. 1977 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-21 16:34:57,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:35:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 2997 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-21 16:35:00,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865248905] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:35:00,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:35:00,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2022-11-21 16:35:00,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161391306] [2022-11-21 16:35:00,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:00,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:35:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:35:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:35:00,264 INFO L87 Difference]: Start difference. First operand 93844 states and 96823 transitions. Second operand has 6 states, 6 states have (on average 238.16666666666666) internal successors, (1429), 6 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:04,215 INFO L93 Difference]: Finished difference Result 193206 states and 199442 transitions. [2022-11-21 16:35:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:35:04,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 238.16666666666666) internal successors, (1429), 6 states have internal predecessors, (1429), 0 states have call successors, (0), 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 1864 [2022-11-21 16:35:04,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:04,333 INFO L225 Difference]: With dead ends: 193206 [2022-11-21 16:35:04,333 INFO L226 Difference]: Without dead ends: 100054 [2022-11-21 16:35:04,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3733 GetRequests, 3722 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:35:04,375 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1897 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:04,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 14 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 16:35:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100054 states. [2022-11-21 16:35:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100054 to 95914. [2022-11-21 16:35:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95914 states, 95913 states have (on average 1.03186220845975) internal successors, (98969), 95913 states have internal predecessors, (98969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95914 states to 95914 states and 98969 transitions. [2022-11-21 16:35:05,791 INFO L78 Accepts]: Start accepts. Automaton has 95914 states and 98969 transitions. Word has length 1864 [2022-11-21 16:35:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:05,792 INFO L495 AbstractCegarLoop]: Abstraction has 95914 states and 98969 transitions. [2022-11-21 16:35:05,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.16666666666666) internal successors, (1429), 6 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 95914 states and 98969 transitions. [2022-11-21 16:35:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1869 [2022-11-21 16:35:06,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:06,449 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:06,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:06,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27334990-7754-4197-85c1-4ac335e62a8c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:35:06,658 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2126662877, now seen corresponding path program 1 times [2022-11-21 16:35:06,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:06,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107218151] [2022-11-21 16:35:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:06,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2495 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-21 16:35:09,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107218151] [2022-11-21 16:35:09,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107218151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:09,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:09,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087173941] [2022-11-21 16:35:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:09,248 INFO L87 Difference]: Start difference. First operand 95914 states and 98969 transitions. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:12,358 INFO L93 Difference]: Finished difference Result 195276 states and 201439 transitions. [2022-11-21 16:35:12,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:12,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 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 1868 [2022-11-21 16:35:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:12,479 INFO L225 Difference]: With dead ends: 195276 [2022-11-21 16:35:12,480 INFO L226 Difference]: Without dead ends: 100054 [2022-11-21 16:35:12,523 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 [2022-11-21 16:35:12,524 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 579 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:12,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 934 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 16:35:12,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100054 states. [2022-11-21 16:35:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100054 to 96604. [2022-11-21 16:35:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96604 states, 96603 states have (on average 1.0291605850749976) internal successors, (99420), 96603 states have internal predecessors, (99420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96604 states to 96604 states and 99420 transitions. [2022-11-21 16:35:13,890 INFO L78 Accepts]: Start accepts. Automaton has 96604 states and 99420 transitions. Word has length 1868 [2022-11-21 16:35:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:13,891 INFO L495 AbstractCegarLoop]: Abstraction has 96604 states and 99420 transitions. [2022-11-21 16:35:13,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 96604 states and 99420 transitions. [2022-11-21 16:35:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1920 [2022-11-21 16:35:14,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:14,553 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:14,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:35:14,554 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1315369963, now seen corresponding path program 1 times [2022-11-21 16:35:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:14,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274290950] [2022-11-21 16:35:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:14,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat