./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8 --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 36682755a8fd6d5761d4aa48745e539f37b082d91c2b7f5a4981e2bf074e7e62 --- 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-2329fc7 [2022-12-13 12:01:07,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:01:07,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:01:07,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:01:07,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:01:07,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:01:07,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:01:07,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:01:07,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:01:07,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:01:07,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:01:07,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:01:07,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:01:07,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:01:07,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:01:07,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:01:07,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:01:07,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:01:07,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:01:07,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:01:07,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:01:07,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:01:07,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:01:07,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:01:07,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:01:07,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:01:07,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:01:07,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:01:07,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:01:07,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:01:07,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:01:07,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:01:07,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:01:07,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:01:07,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:01:07,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:01:07,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:01:07,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:01:07,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:01:07,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:01:07,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:01:07,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:01:07,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:01:07,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:01:07,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:01:07,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:01:07,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:01:07,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:01:07,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:01:07,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:01:07,940 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:01:07,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:01:07,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:01:07,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:01:07,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:01:07,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:01:07,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:01:07,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:01:07,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:01:07,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:01:07,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:01:07,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:01:07,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:01:07,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:01:07,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:01:07,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:01:07,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:01:07,943 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:01:07,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:01:07,943 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:01:07,943 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36682755a8fd6d5761d4aa48745e539f37b082d91c2b7f5a4981e2bf074e7e62 [2022-12-13 12:01:08,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:01:08,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:01:08,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:01:08,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:01:08,142 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:01:08,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem17_label18.c [2022-12-13 12:01:10,718 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:01:10,981 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:01:10,981 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/sv-benchmarks/c/eca-rers2012/Problem17_label18.c [2022-12-13 12:01:10,997 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/data/99c2fe73d/d8fbeb9579a54147a68874c3ad01eb2c/FLAG1c88836ee [2022-12-13 12:01:11,007 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/data/99c2fe73d/d8fbeb9579a54147a68874c3ad01eb2c [2022-12-13 12:01:11,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:01:11,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:01:11,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:01:11,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:01:11,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:01:11,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:11,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae75e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11, skipping insertion in model container [2022-12-13 12:01:11,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:11,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:01:11,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:01:11,228 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_f882bc06-079e-4116-ba31-4bcccef3255b/sv-benchmarks/c/eca-rers2012/Problem17_label18.c[8129,8142] [2022-12-13 12:01:11,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:01:11,623 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:01:11,638 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_f882bc06-079e-4116-ba31-4bcccef3255b/sv-benchmarks/c/eca-rers2012/Problem17_label18.c[8129,8142] [2022-12-13 12:01:11,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:01:11,911 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:01:11,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11 WrapperNode [2022-12-13 12:01:11,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:01:11,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:01:11,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:01:11,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:01:11,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:11,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,173 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-12-13 12:01:12,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:01:12,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:01:12,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:01:12,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:01:12,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:01:12,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:01:12,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:01:12,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:01:12,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (1/1) ... [2022-12-13 12:01:12,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:01:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:12,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:01:12,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:01:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:01:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:01:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:01:12,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:01:12,519 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:01:12,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:01:15,432 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:01:15,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:01:15,447 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 12:01:15,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:01:15 BoogieIcfgContainer [2022-12-13 12:01:15,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:01:15,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:01:15,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:01:15,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:01:15,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:01:11" (1/3) ... [2022-12-13 12:01:15,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725877b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:01:15, skipping insertion in model container [2022-12-13 12:01:15,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:11" (2/3) ... [2022-12-13 12:01:15,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725877b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:01:15, skipping insertion in model container [2022-12-13 12:01:15,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:01:15" (3/3) ... [2022-12-13 12:01:15,458 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18.c [2022-12-13 12:01:15,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:01:15,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:01:15,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:01:15,524 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;@40935f76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:01:15,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:01:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 12:01:15,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:15,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:15,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1246856209, now seen corresponding path program 1 times [2022-12-13 12:01:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:15,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746061858] [2022-12-13 12:01:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:15,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:15,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:15,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746061858] [2022-12-13 12:01:15,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746061858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:15,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:15,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:01:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702862923] [2022-12-13 12:01:15,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:15,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:15,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:15,807 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:18,617 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2022-12-13 12:01:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-12-13 12:01:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:18,630 INFO L225 Difference]: With dead ends: 1667 [2022-12-13 12:01:18,630 INFO L226 Difference]: Without dead ends: 998 [2022-12-13 12:01:18,634 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 [2022-12-13 12:01:18,636 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 490 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:18,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 12:01:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-12-13 12:01:18,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2022-12-13 12:01:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2022-12-13 12:01:18,692 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 55 [2022-12-13 12:01:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:18,693 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2022-12-13 12:01:18,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2022-12-13 12:01:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 12:01:18,695 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:18,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:18,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:01:18,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -368294123, now seen corresponding path program 1 times [2022-12-13 12:01:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:18,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683669726] [2022-12-13 12:01:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:18,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:18,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:18,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683669726] [2022-12-13 12:01:18,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683669726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:18,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:18,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:01:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598605256] [2022-12-13 12:01:18,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:18,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:18,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:18,866 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:21,058 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2022-12-13 12:01:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:21,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-12-13 12:01:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:21,062 INFO L225 Difference]: With dead ends: 2841 [2022-12-13 12:01:21,062 INFO L226 Difference]: Without dead ends: 1861 [2022-12-13 12:01:21,064 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 [2022-12-13 12:01:21,065 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:21,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 12:01:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2022-12-13 12:01:21,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2022-12-13 12:01:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2022-12-13 12:01:21,095 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 120 [2022-12-13 12:01:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:21,096 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2022-12-13 12:01:21,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2022-12-13 12:01:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 12:01:21,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:21,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 12:01:21,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:01:21,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1886359936, now seen corresponding path program 1 times [2022-12-13 12:01:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:21,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666694986] [2022-12-13 12:01:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:21,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:21,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666694986] [2022-12-13 12:01:21,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666694986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:21,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:21,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:01:21,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809840642] [2022-12-13 12:01:21,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:21,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:21,379 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:23,940 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2022-12-13 12:01:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-12-13 12:01:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:23,945 INFO L225 Difference]: With dead ends: 4591 [2022-12-13 12:01:23,945 INFO L226 Difference]: Without dead ends: 2736 [2022-12-13 12:01:23,946 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 [2022-12-13 12:01:23,947 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:23,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 12:01:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-12-13 12:01:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2022-12-13 12:01:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2022-12-13 12:01:23,980 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 160 [2022-12-13 12:01:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:23,980 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2022-12-13 12:01:23,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2022-12-13 12:01:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 12:01:23,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:23,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 12:01:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:01:23,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash 919734479, now seen corresponding path program 1 times [2022-12-13 12:01:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:23,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795872243] [2022-12-13 12:01:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795872243] [2022-12-13 12:01:24,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795872243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:24,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:24,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:01:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703293928] [2022-12-13 12:01:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:24,093 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:25,982 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2022-12-13 12:01:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:25,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-12-13 12:01:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:25,989 INFO L225 Difference]: With dead ends: 6709 [2022-12-13 12:01:25,989 INFO L226 Difference]: Without dead ends: 3995 [2022-12-13 12:01:25,991 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 [2022-12-13 12:01:25,992 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:25,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 12:01:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-12-13 12:01:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2022-12-13 12:01:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2022-12-13 12:01:26,028 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 166 [2022-12-13 12:01:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:26,029 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2022-12-13 12:01:26,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2022-12-13 12:01:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-12-13 12:01:26,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:26,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:26,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:01:26,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash -983063388, now seen corresponding path program 1 times [2022-12-13 12:01:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:26,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777005135] [2022-12-13 12:01:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:26,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:26,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:26,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777005135] [2022-12-13 12:01:26,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777005135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:26,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:26,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:01:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551742101] [2022-12-13 12:01:26,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:26,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:01:26,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:26,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:01:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:01:26,363 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:28,903 INFO L93 Difference]: Finished difference Result 8019 states and 10522 transitions. [2022-12-13 12:01:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:01:28,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2022-12-13 12:01:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:28,911 INFO L225 Difference]: With dead ends: 8019 [2022-12-13 12:01:28,911 INFO L226 Difference]: Without dead ends: 4879 [2022-12-13 12:01:28,912 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 [2022-12-13 12:01:28,913 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1095 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:28,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 881 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 12:01:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2022-12-13 12:01:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4852. [2022-12-13 12:01:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2022-12-13 12:01:29,006 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 203 [2022-12-13 12:01:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:29,006 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2022-12-13 12:01:29,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2022-12-13 12:01:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-12-13 12:01:29,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:29,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:01:29,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash 120323603, now seen corresponding path program 1 times [2022-12-13 12:01:29,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:29,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386817085] [2022-12-13 12:01:29,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 12:01:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:29,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386817085] [2022-12-13 12:01:29,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386817085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:29,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:29,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637885702] [2022-12-13 12:01:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:29,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:29,147 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:31,304 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2022-12-13 12:01:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 209 [2022-12-13 12:01:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:31,341 INFO L225 Difference]: With dead ends: 12249 [2022-12-13 12:01:31,341 INFO L226 Difference]: Without dead ends: 7399 [2022-12-13 12:01:31,345 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 [2022-12-13 12:01:31,346 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 393 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:31,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 12:01:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2022-12-13 12:01:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2022-12-13 12:01:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2022-12-13 12:01:31,451 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 209 [2022-12-13 12:01:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:31,452 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2022-12-13 12:01:31,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2022-12-13 12:01:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-12-13 12:01:31,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:31,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:31,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:01:31,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash -749939841, now seen corresponding path program 1 times [2022-12-13 12:01:31,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:31,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136889832] [2022-12-13 12:01:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:31,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 75 proven. 30 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 12:01:31,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:31,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136889832] [2022-12-13 12:01:31,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136889832] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948089301] [2022-12-13 12:01:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:31,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:01:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:31,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:01:31,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 12:01:31,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:01:31,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948089301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:31,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:01:31,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 12:01:31,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448172270] [2022-12-13 12:01:31,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:31,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:31,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:01:31,937 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:34,486 INFO L93 Difference]: Finished difference Result 12204 states and 15757 transitions. [2022-12-13 12:01:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 222 [2022-12-13 12:01:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:34,506 INFO L225 Difference]: With dead ends: 12204 [2022-12-13 12:01:34,506 INFO L226 Difference]: Without dead ends: 7380 [2022-12-13 12:01:34,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:01:34,509 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 417 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:34,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 511 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 12:01:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2022-12-13 12:01:34,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 6525. [2022-12-13 12:01:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6525 states, 6524 states have (on average 1.2665542611894542) internal successors, (8263), 6524 states have internal predecessors, (8263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6525 states to 6525 states and 8263 transitions. [2022-12-13 12:01:34,584 INFO L78 Accepts]: Start accepts. Automaton has 6525 states and 8263 transitions. Word has length 222 [2022-12-13 12:01:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:34,585 INFO L495 AbstractCegarLoop]: Abstraction has 6525 states and 8263 transitions. [2022-12-13 12:01:34,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 6525 states and 8263 transitions. [2022-12-13 12:01:34,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-12-13 12:01:34,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:34,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:34,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:01:34,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 12:01:34,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash -186884925, now seen corresponding path program 1 times [2022-12-13 12:01:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:34,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003910993] [2022-12-13 12:01:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:34,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:35,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003910993] [2022-12-13 12:01:35,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003910993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:35,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:35,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:35,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245408626] [2022-12-13 12:01:35,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:35,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:35,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:35,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:35,037 INFO L87 Difference]: Start difference. First operand 6525 states and 8263 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:37,274 INFO L93 Difference]: Finished difference Result 18180 states and 22851 transitions. [2022-12-13 12:01:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2022-12-13 12:01:37,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:37,291 INFO L225 Difference]: With dead ends: 18180 [2022-12-13 12:01:37,291 INFO L226 Difference]: Without dead ends: 10805 [2022-12-13 12:01:37,297 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 [2022-12-13 12:01:37,297 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 371 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:37,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 950 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:01:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2022-12-13 12:01:37,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 10797. [2022-12-13 12:01:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10797 states, 10796 states have (on average 1.1779362726935902) internal successors, (12717), 10796 states have internal predecessors, (12717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10797 states to 10797 states and 12717 transitions. [2022-12-13 12:01:37,391 INFO L78 Accepts]: Start accepts. Automaton has 10797 states and 12717 transitions. Word has length 271 [2022-12-13 12:01:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:37,391 INFO L495 AbstractCegarLoop]: Abstraction has 10797 states and 12717 transitions. [2022-12-13 12:01:37,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 10797 states and 12717 transitions. [2022-12-13 12:01:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-13 12:01:37,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:37,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:37,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:01:37,394 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1538620787, now seen corresponding path program 1 times [2022-12-13 12:01:37,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:37,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850308759] [2022-12-13 12:01:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850308759] [2022-12-13 12:01:37,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850308759] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460811666] [2022-12-13 12:01:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:37,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:37,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:37,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:37,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:01:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:37,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:01:37,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:38,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:38,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460811666] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:38,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:01:38,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2022-12-13 12:01:38,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519194816] [2022-12-13 12:01:38,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:38,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:01:38,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:01:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:01:38,400 INFO L87 Difference]: Start difference. First operand 10797 states and 12717 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:41,505 INFO L93 Difference]: Finished difference Result 33972 states and 40195 transitions. [2022-12-13 12:01:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:01:41,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2022-12-13 12:01:41,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:41,539 INFO L225 Difference]: With dead ends: 33972 [2022-12-13 12:01:41,539 INFO L226 Difference]: Without dead ends: 22312 [2022-12-13 12:01:41,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:01:41,548 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 829 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:41,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 158 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 12:01:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22312 states. [2022-12-13 12:01:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22312 to 21035. [2022-12-13 12:01:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21035 states, 21034 states have (on average 1.1547494532661404) internal successors, (24289), 21034 states have internal predecessors, (24289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21035 states to 21035 states and 24289 transitions. [2022-12-13 12:01:41,728 INFO L78 Accepts]: Start accepts. Automaton has 21035 states and 24289 transitions. Word has length 275 [2022-12-13 12:01:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:41,728 INFO L495 AbstractCegarLoop]: Abstraction has 21035 states and 24289 transitions. [2022-12-13 12:01:41,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21035 states and 24289 transitions. [2022-12-13 12:01:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-12-13 12:01:41,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:41,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:41,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:01:41,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:41,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:41,932 INFO L85 PathProgramCache]: Analyzing trace with hash 787472338, now seen corresponding path program 1 times [2022-12-13 12:01:41,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:41,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477535025] [2022-12-13 12:01:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:41,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 12:01:42,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:42,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477535025] [2022-12-13 12:01:42,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477535025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:42,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:42,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:42,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465451807] [2022-12-13 12:01:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:42,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:42,069 INFO L87 Difference]: Start difference. First operand 21035 states and 24289 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:43,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:43,929 INFO L93 Difference]: Finished difference Result 45470 states and 52617 transitions. [2022-12-13 12:01:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:43,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 292 [2022-12-13 12:01:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:43,955 INFO L225 Difference]: With dead ends: 45470 [2022-12-13 12:01:43,955 INFO L226 Difference]: Without dead ends: 24011 [2022-12-13 12:01:43,965 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 [2022-12-13 12:01:43,965 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 385 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:43,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 834 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 12:01:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24011 states. [2022-12-13 12:01:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24011 to 24011. [2022-12-13 12:01:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24011 states, 24010 states have (on average 1.1354435651811745) internal successors, (27262), 24010 states have internal predecessors, (27262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24011 states to 24011 states and 27262 transitions. [2022-12-13 12:01:44,174 INFO L78 Accepts]: Start accepts. Automaton has 24011 states and 27262 transitions. Word has length 292 [2022-12-13 12:01:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:44,174 INFO L495 AbstractCegarLoop]: Abstraction has 24011 states and 27262 transitions. [2022-12-13 12:01:44,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 24011 states and 27262 transitions. [2022-12-13 12:01:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-12-13 12:01:44,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:44,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:44,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:01:44,197 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:44,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:44,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2144464816, now seen corresponding path program 1 times [2022-12-13 12:01:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:44,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651231983] [2022-12-13 12:01:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:44,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 12:01:44,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:44,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651231983] [2022-12-13 12:01:44,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651231983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:44,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:44,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:44,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379279927] [2022-12-13 12:01:44,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:44,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:44,601 INFO L87 Difference]: Start difference. First operand 24011 states and 27262 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:46,666 INFO L93 Difference]: Finished difference Result 57402 states and 65479 transitions. [2022-12-13 12:01:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:46,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349 [2022-12-13 12:01:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:46,696 INFO L225 Difference]: With dead ends: 57402 [2022-12-13 12:01:46,696 INFO L226 Difference]: Without dead ends: 33393 [2022-12-13 12:01:46,706 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 [2022-12-13 12:01:46,706 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 323 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:46,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 854 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 12:01:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33393 states. [2022-12-13 12:01:46,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33393 to 31671. [2022-12-13 12:01:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31671 states, 31670 states have (on average 1.129428481212504) internal successors, (35769), 31670 states have internal predecessors, (35769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31671 states to 31671 states and 35769 transitions. [2022-12-13 12:01:46,973 INFO L78 Accepts]: Start accepts. Automaton has 31671 states and 35769 transitions. Word has length 349 [2022-12-13 12:01:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:46,974 INFO L495 AbstractCegarLoop]: Abstraction has 31671 states and 35769 transitions. [2022-12-13 12:01:46,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31671 states and 35769 transitions. [2022-12-13 12:01:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-12-13 12:01:46,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:46,977 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:46,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:01:46,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1805536226, now seen corresponding path program 1 times [2022-12-13 12:01:46,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:46,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988294654] [2022-12-13 12:01:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 266 proven. 78 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 12:01:47,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:47,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988294654] [2022-12-13 12:01:47,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988294654] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:47,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502527478] [2022-12-13 12:01:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:47,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:47,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:47,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:01:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:01:47,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 266 proven. 78 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 12:01:47,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 12:01:48,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502527478] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:48,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:01:48,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-12-13 12:01:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652975444] [2022-12-13 12:01:48,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:48,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:01:48,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:01:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:01:48,101 INFO L87 Difference]: Start difference. First operand 31671 states and 35769 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:51,628 INFO L93 Difference]: Finished difference Result 76141 states and 86284 transitions. [2022-12-13 12:01:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:01:51,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 350 [2022-12-13 12:01:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:51,662 INFO L225 Difference]: With dead ends: 76141 [2022-12-13 12:01:51,663 INFO L226 Difference]: Without dead ends: 44045 [2022-12-13 12:01:51,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 695 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:01:51,678 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 886 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:51,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 189 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 12:01:51,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44045 states. [2022-12-13 12:01:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44045 to 42342. [2022-12-13 12:01:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42342 states, 42341 states have (on average 1.139155900899837) internal successors, (48233), 42341 states have internal predecessors, (48233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42342 states to 42342 states and 48233 transitions. [2022-12-13 12:01:52,031 INFO L78 Accepts]: Start accepts. Automaton has 42342 states and 48233 transitions. Word has length 350 [2022-12-13 12:01:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:52,032 INFO L495 AbstractCegarLoop]: Abstraction has 42342 states and 48233 transitions. [2022-12-13 12:01:52,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 42342 states and 48233 transitions. [2022-12-13 12:01:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-12-13 12:01:52,034 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:52,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 12:01:52,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:01:52,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:52,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash -706456091, now seen corresponding path program 1 times [2022-12-13 12:01:52,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:52,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022719195] [2022-12-13 12:01:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-12-13 12:01:52,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:52,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022719195] [2022-12-13 12:01:52,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022719195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:52,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:52,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029996050] [2022-12-13 12:01:52,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:52,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:52,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:52,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:52,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:52,552 INFO L87 Difference]: Start difference. First operand 42342 states and 48233 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:54,907 INFO L93 Difference]: Finished difference Result 100001 states and 113526 transitions. [2022-12-13 12:01:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 367 [2022-12-13 12:01:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:54,957 INFO L225 Difference]: With dead ends: 100001 [2022-12-13 12:01:54,957 INFO L226 Difference]: Without dead ends: 57229 [2022-12-13 12:01:54,976 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 [2022-12-13 12:01:54,976 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 421 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:54,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 423 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 12:01:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57229 states. [2022-12-13 12:01:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57229 to 53820. [2022-12-13 12:01:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53820 states, 53819 states have (on average 1.1234694067151005) internal successors, (60464), 53819 states have internal predecessors, (60464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53820 states to 53820 states and 60464 transitions. [2022-12-13 12:01:55,470 INFO L78 Accepts]: Start accepts. Automaton has 53820 states and 60464 transitions. Word has length 367 [2022-12-13 12:01:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:55,470 INFO L495 AbstractCegarLoop]: Abstraction has 53820 states and 60464 transitions. [2022-12-13 12:01:55,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 53820 states and 60464 transitions. [2022-12-13 12:01:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-12-13 12:01:55,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:55,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 12:01:55,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:01:55,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash -773242601, now seen corresponding path program 1 times [2022-12-13 12:01:55,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:55,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397548372] [2022-12-13 12:01:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-12-13 12:01:55,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397548372] [2022-12-13 12:01:55,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397548372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:55,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:55,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:55,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875905927] [2022-12-13 12:01:55,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:55,736 INFO L87 Difference]: Start difference. First operand 53820 states and 60464 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:57,980 INFO L93 Difference]: Finished difference Result 118270 states and 132534 transitions. [2022-12-13 12:01:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:57,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 437 [2022-12-13 12:01:57,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:58,035 INFO L225 Difference]: With dead ends: 118270 [2022-12-13 12:01:58,035 INFO L226 Difference]: Without dead ends: 64026 [2022-12-13 12:01:58,058 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 [2022-12-13 12:01:58,058 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 424 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:58,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 349 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 12:01:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64026 states. [2022-12-13 12:01:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64026 to 53813. [2022-12-13 12:01:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53813 states, 53812 states have (on average 1.117427339626849) internal successors, (60131), 53812 states have internal predecessors, (60131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53813 states to 53813 states and 60131 transitions. [2022-12-13 12:01:58,581 INFO L78 Accepts]: Start accepts. Automaton has 53813 states and 60131 transitions. Word has length 437 [2022-12-13 12:01:58,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:58,581 INFO L495 AbstractCegarLoop]: Abstraction has 53813 states and 60131 transitions. [2022-12-13 12:01:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 53813 states and 60131 transitions. [2022-12-13 12:01:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-12-13 12:01:58,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:58,586 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:58,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:01:58,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:58,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -984566140, now seen corresponding path program 1 times [2022-12-13 12:01:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:58,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742586398] [2022-12-13 12:01:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-12-13 12:01:58,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:58,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742586398] [2022-12-13 12:01:58,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742586398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:58,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:58,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:58,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454590100] [2022-12-13 12:01:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:58,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:58,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:58,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:58,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:58,913 INFO L87 Difference]: Start difference. First operand 53813 states and 60131 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:01,306 INFO L93 Difference]: Finished difference Result 121711 states and 135669 transitions. [2022-12-13 12:02:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:02:01,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2022-12-13 12:02:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:01,362 INFO L225 Difference]: With dead ends: 121711 [2022-12-13 12:02:01,362 INFO L226 Difference]: Without dead ends: 67474 [2022-12-13 12:02:01,384 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 [2022-12-13 12:02:01,384 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 437 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:01,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 317 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 12:02:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67474 states. [2022-12-13 12:02:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67474 to 54236. [2022-12-13 12:02:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54236 states, 54235 states have (on average 1.1161980271042684) internal successors, (60537), 54235 states have internal predecessors, (60537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54236 states to 54236 states and 60537 transitions. [2022-12-13 12:02:01,926 INFO L78 Accepts]: Start accepts. Automaton has 54236 states and 60537 transitions. Word has length 451 [2022-12-13 12:02:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:01,926 INFO L495 AbstractCegarLoop]: Abstraction has 54236 states and 60537 transitions. [2022-12-13 12:02:01,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 54236 states and 60537 transitions. [2022-12-13 12:02:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-12-13 12:02:01,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:01,933 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:01,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:02:01,933 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2117113694, now seen corresponding path program 1 times [2022-12-13 12:02:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:01,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877296101] [2022-12-13 12:02:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:01,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-12-13 12:02:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:02,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877296101] [2022-12-13 12:02:02,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877296101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:02,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:02,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:02:02,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301727263] [2022-12-13 12:02:02,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:02,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:02:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:02:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:02:02,180 INFO L87 Difference]: Start difference. First operand 54236 states and 60537 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:04,351 INFO L93 Difference]: Finished difference Result 122091 states and 135865 transitions. [2022-12-13 12:02:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:02:04,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 479 [2022-12-13 12:02:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:04,414 INFO L225 Difference]: With dead ends: 122091 [2022-12-13 12:02:04,414 INFO L226 Difference]: Without dead ends: 67432 [2022-12-13 12:02:04,441 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 [2022-12-13 12:02:04,442 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 488 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:04,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 258 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 12:02:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67432 states. [2022-12-13 12:02:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67432 to 53349. [2022-12-13 12:02:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53349 states, 53348 states have (on average 1.104914898402939) internal successors, (58945), 53348 states have internal predecessors, (58945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53349 states to 53349 states and 58945 transitions. [2022-12-13 12:02:05,078 INFO L78 Accepts]: Start accepts. Automaton has 53349 states and 58945 transitions. Word has length 479 [2022-12-13 12:02:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:05,079 INFO L495 AbstractCegarLoop]: Abstraction has 53349 states and 58945 transitions. [2022-12-13 12:02:05,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:05,079 INFO L276 IsEmpty]: Start isEmpty. Operand 53349 states and 58945 transitions. [2022-12-13 12:02:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-12-13 12:02:05,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:05,087 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:05,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:02:05,087 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:05,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1208447391, now seen corresponding path program 1 times [2022-12-13 12:02:05,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:05,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100445141] [2022-12-13 12:02:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-12-13 12:02:05,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:05,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100445141] [2022-12-13 12:02:05,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100445141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:05,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:05,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:02:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688532991] [2022-12-13 12:02:05,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:05,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:02:05,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:05,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:02:05,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:05,642 INFO L87 Difference]: Start difference. First operand 53349 states and 58945 transitions. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:08,716 INFO L93 Difference]: Finished difference Result 132697 states and 146072 transitions. [2022-12-13 12:02:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:02:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 499 [2022-12-13 12:02:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:08,775 INFO L225 Difference]: With dead ends: 132697 [2022-12-13 12:02:08,776 INFO L226 Difference]: Without dead ends: 75520 [2022-12-13 12:02:08,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:08,800 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 740 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:08,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 198 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 12:02:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75520 states. [2022-12-13 12:02:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75520 to 69531. [2022-12-13 12:02:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69531 states, 69530 states have (on average 1.101754638285632) internal successors, (76605), 69530 states have internal predecessors, (76605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69531 states to 69531 states and 76605 transitions. [2022-12-13 12:02:09,542 INFO L78 Accepts]: Start accepts. Automaton has 69531 states and 76605 transitions. Word has length 499 [2022-12-13 12:02:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:09,542 INFO L495 AbstractCegarLoop]: Abstraction has 69531 states and 76605 transitions. [2022-12-13 12:02:09,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 69531 states and 76605 transitions. [2022-12-13 12:02:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-12-13 12:02:09,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:09,554 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:09,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:02:09,554 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:09,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1047721825, now seen corresponding path program 1 times [2022-12-13 12:02:09,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:09,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469881471] [2022-12-13 12:02:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-12-13 12:02:09,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469881471] [2022-12-13 12:02:09,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469881471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:09,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:09,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:02:09,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771651334] [2022-12-13 12:02:09,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:09,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:02:09,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:02:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:02:09,865 INFO L87 Difference]: Start difference. First operand 69531 states and 76605 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:11,198 INFO L93 Difference]: Finished difference Result 136920 states and 150558 transitions. [2022-12-13 12:02:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:02:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 515 [2022-12-13 12:02:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:11,251 INFO L225 Difference]: With dead ends: 136920 [2022-12-13 12:02:11,251 INFO L226 Difference]: Without dead ends: 67391 [2022-12-13 12:02:11,276 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 [2022-12-13 12:02:11,277 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 623 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:11,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 101 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 12:02:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67391 states. [2022-12-13 12:02:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67391 to 67380. [2022-12-13 12:02:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67380 states, 67379 states have (on average 1.0971222487718726) internal successors, (73923), 67379 states have internal predecessors, (73923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67380 states to 67380 states and 73923 transitions. [2022-12-13 12:02:11,961 INFO L78 Accepts]: Start accepts. Automaton has 67380 states and 73923 transitions. Word has length 515 [2022-12-13 12:02:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:11,961 INFO L495 AbstractCegarLoop]: Abstraction has 67380 states and 73923 transitions. [2022-12-13 12:02:11,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 67380 states and 73923 transitions. [2022-12-13 12:02:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-12-13 12:02:11,968 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:11,969 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:11,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:02:11,969 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:11,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1522403233, now seen corresponding path program 1 times [2022-12-13 12:02:11,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:11,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589199946] [2022-12-13 12:02:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:11,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-12-13 12:02:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589199946] [2022-12-13 12:02:12,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589199946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:12,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:12,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:02:12,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266619672] [2022-12-13 12:02:12,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:12,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:02:12,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:02:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:12,405 INFO L87 Difference]: Start difference. First operand 67380 states and 73923 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:15,240 INFO L93 Difference]: Finished difference Result 146669 states and 160872 transitions. [2022-12-13 12:02:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:02:15,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 515 [2022-12-13 12:02:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:15,305 INFO L225 Difference]: With dead ends: 146669 [2022-12-13 12:02:15,305 INFO L226 Difference]: Without dead ends: 78016 [2022-12-13 12:02:15,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:15,334 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 806 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:15,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 822 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 12:02:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78016 states. [2022-12-13 12:02:16,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78016 to 66501. [2022-12-13 12:02:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66501 states, 66500 states have (on average 1.0954285714285714) internal successors, (72846), 66500 states have internal predecessors, (72846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66501 states to 66501 states and 72846 transitions. [2022-12-13 12:02:16,209 INFO L78 Accepts]: Start accepts. Automaton has 66501 states and 72846 transitions. Word has length 515 [2022-12-13 12:02:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:16,210 INFO L495 AbstractCegarLoop]: Abstraction has 66501 states and 72846 transitions. [2022-12-13 12:02:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 66501 states and 72846 transitions. [2022-12-13 12:02:16,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2022-12-13 12:02:16,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:16,223 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:02:16,223 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:16,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:16,223 INFO L85 PathProgramCache]: Analyzing trace with hash 80934831, now seen corresponding path program 1 times [2022-12-13 12:02:16,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:16,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139947940] [2022-12-13 12:02:16,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 463 proven. 53 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-12-13 12:02:17,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:17,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139947940] [2022-12-13 12:02:17,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139947940] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:02:17,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601318951] [2022-12-13 12:02:17,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:17,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:02:17,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:02:17,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:02:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:17,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:02:17,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 479 proven. 82 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-12-13 12:02:17,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 479 proven. 82 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-12-13 12:02:18,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601318951] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:18,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:18,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-12-13 12:02:18,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572052488] [2022-12-13 12:02:18,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:18,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:02:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:02:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:02:18,398 INFO L87 Difference]: Start difference. First operand 66501 states and 72846 transitions. Second operand has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:28,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:28,466 INFO L93 Difference]: Finished difference Result 171748 states and 187381 transitions. [2022-12-13 12:02:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:02:28,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 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 544 [2022-12-13 12:02:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:28,564 INFO L225 Difference]: With dead ends: 171748 [2022-12-13 12:02:28,564 INFO L226 Difference]: Without dead ends: 100565 [2022-12-13 12:02:28,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1092 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:02:28,599 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 6878 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 8403 mSolverCounterSat, 2080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6878 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 10483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2080 IncrementalHoareTripleChecker+Valid, 8403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:28,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6878 Valid, 285 Invalid, 10483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2080 Valid, 8403 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-12-13 12:02:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100565 states. [2022-12-13 12:02:29,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100565 to 85605. [2022-12-13 12:02:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85605 states, 85604 states have (on average 1.0749964954908648) internal successors, (92024), 85604 states have internal predecessors, (92024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85605 states to 85605 states and 92024 transitions. [2022-12-13 12:02:29,600 INFO L78 Accepts]: Start accepts. Automaton has 85605 states and 92024 transitions. Word has length 544 [2022-12-13 12:02:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:29,601 INFO L495 AbstractCegarLoop]: Abstraction has 85605 states and 92024 transitions. [2022-12-13 12:02:29,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 85605 states and 92024 transitions. [2022-12-13 12:02:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-12-13 12:02:29,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:29,610 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 12:02:29,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:02:29,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:29,812 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:29,813 INFO L85 PathProgramCache]: Analyzing trace with hash 900326955, now seen corresponding path program 1 times [2022-12-13 12:02:29,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:29,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336025032] [2022-12-13 12:02:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:29,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-12-13 12:02:30,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:30,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336025032] [2022-12-13 12:02:30,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336025032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:30,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:30,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:02:30,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721751087] [2022-12-13 12:02:30,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:30,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:02:30,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:30,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:02:30,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:02:30,140 INFO L87 Difference]: Start difference. First operand 85605 states and 92024 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:32,079 INFO L93 Difference]: Finished difference Result 169076 states and 181718 transitions. [2022-12-13 12:02:32,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:02:32,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 579 [2022-12-13 12:02:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:32,163 INFO L225 Difference]: With dead ends: 169076 [2022-12-13 12:02:32,163 INFO L226 Difference]: Without dead ends: 83473 [2022-12-13 12:02:32,198 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 [2022-12-13 12:02:32,199 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 434 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:32,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 683 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 12:02:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83473 states. [2022-12-13 12:02:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83473 to 81771. [2022-12-13 12:02:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81771 states, 81770 states have (on average 1.0613427907545554) internal successors, (86786), 81770 states have internal predecessors, (86786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81771 states to 81771 states and 86786 transitions. [2022-12-13 12:02:33,213 INFO L78 Accepts]: Start accepts. Automaton has 81771 states and 86786 transitions. Word has length 579 [2022-12-13 12:02:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:33,213 INFO L495 AbstractCegarLoop]: Abstraction has 81771 states and 86786 transitions. [2022-12-13 12:02:33,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 81771 states and 86786 transitions. [2022-12-13 12:02:33,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-12-13 12:02:33,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:33,225 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:33,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:02:33,226 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1747705862, now seen corresponding path program 1 times [2022-12-13 12:02:33,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:33,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522279746] [2022-12-13 12:02:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-12-13 12:02:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:33,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522279746] [2022-12-13 12:02:33,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522279746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:33,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:33,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:02:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388974767] [2022-12-13 12:02:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:33,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:02:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:02:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:02:33,466 INFO L87 Difference]: Start difference. First operand 81771 states and 86786 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:35,497 INFO L93 Difference]: Finished difference Result 163970 states and 174030 transitions. [2022-12-13 12:02:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:02:35,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 641 [2022-12-13 12:02:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:35,565 INFO L225 Difference]: With dead ends: 163970 [2022-12-13 12:02:35,566 INFO L226 Difference]: Without dead ends: 82201 [2022-12-13 12:02:35,598 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 [2022-12-13 12:02:35,598 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 489 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:35,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 652 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 12:02:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82201 states. [2022-12-13 12:02:36,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82201 to 81347. [2022-12-13 12:02:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81347 states, 81346 states have (on average 1.057372212524279) internal successors, (86013), 81346 states have internal predecessors, (86013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81347 states to 81347 states and 86013 transitions. [2022-12-13 12:02:36,379 INFO L78 Accepts]: Start accepts. Automaton has 81347 states and 86013 transitions. Word has length 641 [2022-12-13 12:02:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:36,380 INFO L495 AbstractCegarLoop]: Abstraction has 81347 states and 86013 transitions. [2022-12-13 12:02:36,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 81347 states and 86013 transitions. [2022-12-13 12:02:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2022-12-13 12:02:36,395 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:36,396 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:36,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:02:36,396 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:36,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:36,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1665378813, now seen corresponding path program 1 times [2022-12-13 12:02:36,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:36,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743138212] [2022-12-13 12:02:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 12:02:36,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:36,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743138212] [2022-12-13 12:02:36,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743138212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:36,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:36,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:02:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19088428] [2022-12-13 12:02:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:36,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:02:36,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:02:36,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:36,991 INFO L87 Difference]: Start difference. First operand 81347 states and 86013 transitions. Second operand has 4 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:39,910 INFO L93 Difference]: Finished difference Result 173753 states and 183585 transitions. [2022-12-13 12:02:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:02:39,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 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 660 [2022-12-13 12:02:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:39,984 INFO L225 Difference]: With dead ends: 173753 [2022-12-13 12:02:39,985 INFO L226 Difference]: Without dead ends: 92408 [2022-12-13 12:02:40,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:40,016 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 525 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:40,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 728 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2838 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 12:02:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92408 states. [2022-12-13 12:02:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92408 to 87728. [2022-12-13 12:02:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87728 states, 87727 states have (on average 1.0569949958393654) internal successors, (92727), 87727 states have internal predecessors, (92727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87728 states to 87728 states and 92727 transitions. [2022-12-13 12:02:40,935 INFO L78 Accepts]: Start accepts. Automaton has 87728 states and 92727 transitions. Word has length 660 [2022-12-13 12:02:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:40,936 INFO L495 AbstractCegarLoop]: Abstraction has 87728 states and 92727 transitions. [2022-12-13 12:02:40,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 87728 states and 92727 transitions. [2022-12-13 12:02:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-12-13 12:02:40,951 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:40,951 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:40,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:02:40,951 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash 736192065, now seen corresponding path program 1 times [2022-12-13 12:02:40,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:40,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255837318] [2022-12-13 12:02:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:40,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-12-13 12:02:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255837318] [2022-12-13 12:02:41,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255837318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:41,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:41,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:02:41,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047312579] [2022-12-13 12:02:41,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:02:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:02:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:02:41,509 INFO L87 Difference]: Start difference. First operand 87728 states and 92727 transitions. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:43,626 INFO L93 Difference]: Finished difference Result 180569 states and 190798 transitions. [2022-12-13 12:02:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:02:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 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 703 [2022-12-13 12:02:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:43,698 INFO L225 Difference]: With dead ends: 180569 [2022-12-13 12:02:43,699 INFO L226 Difference]: Without dead ends: 92417 [2022-12-13 12:02:43,734 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 [2022-12-13 12:02:43,734 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 405 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:43,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 266 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 12:02:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92417 states. [2022-12-13 12:02:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92417 to 91555. [2022-12-13 12:02:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91555 states, 91554 states have (on average 1.0563711033925334) internal successors, (96715), 91554 states have internal predecessors, (96715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91555 states to 91555 states and 96715 transitions. [2022-12-13 12:02:44,712 INFO L78 Accepts]: Start accepts. Automaton has 91555 states and 96715 transitions. Word has length 703 [2022-12-13 12:02:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:44,713 INFO L495 AbstractCegarLoop]: Abstraction has 91555 states and 96715 transitions. [2022-12-13 12:02:44,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 91555 states and 96715 transitions. [2022-12-13 12:02:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2022-12-13 12:02:44,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:44,725 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:44,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:02:44,725 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1094676878, now seen corresponding path program 1 times [2022-12-13 12:02:44,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:44,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865663688] [2022-12-13 12:02:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 1007 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-12-13 12:02:45,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865663688] [2022-12-13 12:02:45,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865663688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:45,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:45,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:02:45,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551874868] [2022-12-13 12:02:45,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:45,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:02:45,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:02:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:45,131 INFO L87 Difference]: Start difference. First operand 91555 states and 96715 transitions. Second operand has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:48,366 INFO L93 Difference]: Finished difference Result 206512 states and 217763 transitions. [2022-12-13 12:02:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:02:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 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 704 [2022-12-13 12:02:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:48,474 INFO L225 Difference]: With dead ends: 206512 [2022-12-13 12:02:48,474 INFO L226 Difference]: Without dead ends: 114109 [2022-12-13 12:02:48,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:48,512 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 606 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:48,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 241 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 12:02:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114109 states. [2022-12-13 12:02:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114109 to 98371. [2022-12-13 12:02:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98371 states, 98370 states have (on average 1.054579648266748) internal successors, (103739), 98370 states have internal predecessors, (103739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98371 states to 98371 states and 103739 transitions. [2022-12-13 12:02:49,678 INFO L78 Accepts]: Start accepts. Automaton has 98371 states and 103739 transitions. Word has length 704 [2022-12-13 12:02:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:49,679 INFO L495 AbstractCegarLoop]: Abstraction has 98371 states and 103739 transitions. [2022-12-13 12:02:49,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 98371 states and 103739 transitions. [2022-12-13 12:02:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2022-12-13 12:02:49,696 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:49,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 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] [2022-12-13 12:02:49,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:02:49,696 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash 728337234, now seen corresponding path program 1 times [2022-12-13 12:02:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:49,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640775620] [2022-12-13 12:02:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 854 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-12-13 12:02:50,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:50,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640775620] [2022-12-13 12:02:50,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640775620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:50,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:50,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:02:50,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610024724] [2022-12-13 12:02:50,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:50,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:02:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:02:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:50,305 INFO L87 Difference]: Start difference. First operand 98371 states and 103739 transitions. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:53,332 INFO L93 Difference]: Finished difference Result 203115 states and 214107 transitions. [2022-12-13 12:02:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:02:53,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 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 720 [2022-12-13 12:02:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:53,424 INFO L225 Difference]: With dead ends: 203115 [2022-12-13 12:02:53,424 INFO L226 Difference]: Without dead ends: 104746 [2022-12-13 12:02:53,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:53,444 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 531 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:53,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 212 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 12:02:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104746 states. [2022-12-13 12:02:54,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104746 to 91990. [2022-12-13 12:02:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91990 states, 91989 states have (on average 1.0554957657980846) internal successors, (97094), 91989 states have internal predecessors, (97094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91990 states to 91990 states and 97094 transitions. [2022-12-13 12:02:54,331 INFO L78 Accepts]: Start accepts. Automaton has 91990 states and 97094 transitions. Word has length 720 [2022-12-13 12:02:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:54,332 INFO L495 AbstractCegarLoop]: Abstraction has 91990 states and 97094 transitions. [2022-12-13 12:02:54,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 91990 states and 97094 transitions. [2022-12-13 12:02:54,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2022-12-13 12:02:54,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:54,347 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:02:54,348 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1625663084, now seen corresponding path program 1 times [2022-12-13 12:02:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:54,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119704371] [2022-12-13 12:02:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 933 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-12-13 12:02:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:54,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119704371] [2022-12-13 12:02:54,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119704371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:54,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:54,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:02:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569700361] [2022-12-13 12:02:54,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:54,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:02:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:02:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:02:54,800 INFO L87 Difference]: Start difference. First operand 91990 states and 97094 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:57,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:57,778 INFO L93 Difference]: Finished difference Result 190376 states and 200894 transitions. [2022-12-13 12:02:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:02:57,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 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 732 [2022-12-13 12:02:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:57,857 INFO L225 Difference]: With dead ends: 190376 [2022-12-13 12:02:57,857 INFO L226 Difference]: Without dead ends: 97963 [2022-12-13 12:02:57,893 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 [2022-12-13 12:02:57,893 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 416 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:57,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 235 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 12:02:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97963 states. [2022-12-13 12:02:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97963 to 92414. [2022-12-13 12:02:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92414 states, 92413 states have (on average 1.0548515901442437) internal successors, (97482), 92413 states have internal predecessors, (97482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92414 states to 92414 states and 97482 transitions. [2022-12-13 12:02:58,876 INFO L78 Accepts]: Start accepts. Automaton has 92414 states and 97482 transitions. Word has length 732 [2022-12-13 12:02:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:58,876 INFO L495 AbstractCegarLoop]: Abstraction has 92414 states and 97482 transitions. [2022-12-13 12:02:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 92414 states and 97482 transitions. [2022-12-13 12:02:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2022-12-13 12:02:58,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:58,889 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:58,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 12:02:58,889 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1273742438, now seen corresponding path program 1 times [2022-12-13 12:02:58,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:58,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011146905] [2022-12-13 12:02:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:58,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 861 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-12-13 12:02:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:59,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011146905] [2022-12-13 12:02:59,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011146905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:02:59,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:02:59,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:02:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503896577] [2022-12-13 12:02:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:02:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:02:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:02:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:02:59,346 INFO L87 Difference]: Start difference. First operand 92414 states and 97482 transitions. Second operand has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:02,902 INFO L93 Difference]: Finished difference Result 198433 states and 209018 transitions. [2022-12-13 12:03:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:03:02,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 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 734 [2022-12-13 12:03:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:02,989 INFO L225 Difference]: With dead ends: 198433 [2022-12-13 12:03:02,989 INFO L226 Difference]: Without dead ends: 106021 [2022-12-13 12:03:03,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:03,018 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 566 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:03,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 229 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 12:03:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106021 states. [2022-12-13 12:03:03,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106021 to 90285. [2022-12-13 12:03:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90285 states, 90284 states have (on average 1.0551038943777413) internal successors, (95259), 90284 states have internal predecessors, (95259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90285 states to 90285 states and 95259 transitions. [2022-12-13 12:03:03,970 INFO L78 Accepts]: Start accepts. Automaton has 90285 states and 95259 transitions. Word has length 734 [2022-12-13 12:03:03,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:03,971 INFO L495 AbstractCegarLoop]: Abstraction has 90285 states and 95259 transitions. [2022-12-13 12:03:03,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 90285 states and 95259 transitions. [2022-12-13 12:03:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2022-12-13 12:03:03,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:03,991 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 12:03:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 12:03:03,991 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1149771834, now seen corresponding path program 1 times [2022-12-13 12:03:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:03,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006046073] [2022-12-13 12:03:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 1187 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-13 12:03:04,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:04,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006046073] [2022-12-13 12:03:04,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006046073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:04,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:04,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:03:04,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118682522] [2022-12-13 12:03:04,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:04,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:03:04,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:04,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:03:04,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:03:04,504 INFO L87 Difference]: Start difference. First operand 90285 states and 95259 transitions. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:08,707 INFO L93 Difference]: Finished difference Result 189058 states and 199328 transitions. [2022-12-13 12:03:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:03:08,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 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 796 [2022-12-13 12:03:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:08,779 INFO L225 Difference]: With dead ends: 189058 [2022-12-13 12:03:08,779 INFO L226 Difference]: Without dead ends: 97923 [2022-12-13 12:03:08,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:03:08,796 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1017 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 3266 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 3266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:08,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 197 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 3266 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 12:03:08,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97923 states. [2022-12-13 12:03:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97923 to 84726. [2022-12-13 12:03:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84726 states, 84725 states have (on average 1.0459368545293597) internal successors, (88617), 84725 states have internal predecessors, (88617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84726 states to 84726 states and 88617 transitions. [2022-12-13 12:03:09,683 INFO L78 Accepts]: Start accepts. Automaton has 84726 states and 88617 transitions. Word has length 796 [2022-12-13 12:03:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:09,683 INFO L495 AbstractCegarLoop]: Abstraction has 84726 states and 88617 transitions. [2022-12-13 12:03:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 84726 states and 88617 transitions. [2022-12-13 12:03:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2022-12-13 12:03:09,703 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:09,703 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:09,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 12:03:09,703 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:09,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1321751440, now seen corresponding path program 1 times [2022-12-13 12:03:09,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:09,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665554240] [2022-12-13 12:03:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:09,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 1248 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-12-13 12:03:10,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665554240] [2022-12-13 12:03:10,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665554240] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704513103] [2022-12-13 12:03:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:10,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:10,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:10,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:03:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:10,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:03:10,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 1183 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-12-13 12:03:11,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:03:11,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704513103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:11,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:03:11,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-13 12:03:11,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011281024] [2022-12-13 12:03:11,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:11,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:03:11,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:03:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:11,175 INFO L87 Difference]: Start difference. First operand 84726 states and 88617 transitions. Second operand has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:13,406 INFO L93 Difference]: Finished difference Result 172425 states and 180334 transitions. [2022-12-13 12:03:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:03:13,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 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 831 [2022-12-13 12:03:13,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:13,474 INFO L225 Difference]: With dead ends: 172425 [2022-12-13 12:03:13,474 INFO L226 Difference]: Without dead ends: 87701 [2022-12-13 12:03:13,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 830 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:13,509 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 806 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:13,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 195 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2013 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 12:03:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87701 states. [2022-12-13 12:03:14,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87701 to 86851. [2022-12-13 12:03:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86851 states, 86850 states have (on average 1.0452043753598157) internal successors, (90776), 86850 states have internal predecessors, (90776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86851 states to 86851 states and 90776 transitions. [2022-12-13 12:03:14,393 INFO L78 Accepts]: Start accepts. Automaton has 86851 states and 90776 transitions. Word has length 831 [2022-12-13 12:03:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:14,393 INFO L495 AbstractCegarLoop]: Abstraction has 86851 states and 90776 transitions. [2022-12-13 12:03:14,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 86851 states and 90776 transitions. [2022-12-13 12:03:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2022-12-13 12:03:14,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:14,417 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 12:03:14,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:03:14,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:14,619 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:14,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:14,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1151065717, now seen corresponding path program 1 times [2022-12-13 12:03:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:14,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758986959] [2022-12-13 12:03:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 1107 proven. 0 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2022-12-13 12:03:15,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:15,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758986959] [2022-12-13 12:03:15,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758986959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:15,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:15,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:03:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172842692] [2022-12-13 12:03:15,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:15,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:03:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:03:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:15,618 INFO L87 Difference]: Start difference. First operand 86851 states and 90776 transitions. Second operand has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:18,462 INFO L93 Difference]: Finished difference Result 184339 states and 192443 transitions. [2022-12-13 12:03:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:03:18,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 883 [2022-12-13 12:03:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:18,532 INFO L225 Difference]: With dead ends: 184339 [2022-12-13 12:03:18,533 INFO L226 Difference]: Without dead ends: 97490 [2022-12-13 12:03:18,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:18,555 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 590 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:18,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 271 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:03:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97490 states. [2022-12-13 12:03:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97490 to 89828. [2022-12-13 12:03:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89828 states, 89827 states have (on average 1.0447638237946275) internal successors, (93848), 89827 states have internal predecessors, (93848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89828 states to 89828 states and 93848 transitions. [2022-12-13 12:03:19,468 INFO L78 Accepts]: Start accepts. Automaton has 89828 states and 93848 transitions. Word has length 883 [2022-12-13 12:03:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:19,468 INFO L495 AbstractCegarLoop]: Abstraction has 89828 states and 93848 transitions. [2022-12-13 12:03:19,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 89828 states and 93848 transitions. [2022-12-13 12:03:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2022-12-13 12:03:19,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:19,498 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 12:03:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 12:03:19,499 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1450968119, now seen corresponding path program 1 times [2022-12-13 12:03:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540951953] [2022-12-13 12:03:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 985 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2022-12-13 12:03:20,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:20,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540951953] [2022-12-13 12:03:20,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540951953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:20,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:20,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:03:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514130477] [2022-12-13 12:03:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:20,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:03:20,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:03:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:20,368 INFO L87 Difference]: Start difference. First operand 89828 states and 93848 transitions. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:23,103 INFO L93 Difference]: Finished difference Result 106007 states and 110425 transitions. [2022-12-13 12:03:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:03:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 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 987 [2022-12-13 12:03:23,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:23,189 INFO L225 Difference]: With dead ends: 106007 [2022-12-13 12:03:23,189 INFO L226 Difference]: Without dead ends: 105580 [2022-12-13 12:03:23,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:23,206 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 667 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:23,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 131 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 12:03:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105580 states. [2022-12-13 12:03:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105580 to 90678. [2022-12-13 12:03:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90678 states, 90677 states have (on average 1.0447301961908753) internal successors, (94733), 90677 states have internal predecessors, (94733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90678 states to 90678 states and 94733 transitions. [2022-12-13 12:03:24,163 INFO L78 Accepts]: Start accepts. Automaton has 90678 states and 94733 transitions. Word has length 987 [2022-12-13 12:03:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:24,164 INFO L495 AbstractCegarLoop]: Abstraction has 90678 states and 94733 transitions. [2022-12-13 12:03:24,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 90678 states and 94733 transitions. [2022-12-13 12:03:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2022-12-13 12:03:24,194 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:24,195 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-12-13 12:03:24,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 12:03:24,195 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:24,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2140603820, now seen corresponding path program 1 times [2022-12-13 12:03:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:24,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910549455] [2022-12-13 12:03:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 1418 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-12-13 12:03:24,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:24,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910549455] [2022-12-13 12:03:24,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910549455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:24,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:24,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:03:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549200199] [2022-12-13 12:03:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:24,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:03:24,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:03:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:24,794 INFO L87 Difference]: Start difference. First operand 90678 states and 94733 transitions. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:27,443 INFO L93 Difference]: Finished difference Result 184773 states and 192963 transitions. [2022-12-13 12:03:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:03:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 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 1013 [2022-12-13 12:03:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:27,512 INFO L225 Difference]: With dead ends: 184773 [2022-12-13 12:03:27,512 INFO L226 Difference]: Without dead ends: 94097 [2022-12-13 12:03:27,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:27,536 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 786 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:27,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 189 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:03:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94097 states. [2022-12-13 12:03:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94097 to 87274. [2022-12-13 12:03:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87274 states, 87273 states have (on average 1.0415477868298328) internal successors, (90899), 87273 states have internal predecessors, (90899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87274 states to 87274 states and 90899 transitions. [2022-12-13 12:03:28,452 INFO L78 Accepts]: Start accepts. Automaton has 87274 states and 90899 transitions. Word has length 1013 [2022-12-13 12:03:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:28,452 INFO L495 AbstractCegarLoop]: Abstraction has 87274 states and 90899 transitions. [2022-12-13 12:03:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 87274 states and 90899 transitions. [2022-12-13 12:03:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2022-12-13 12:03:28,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:28,484 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:28,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 12:03:28,484 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1068187921, now seen corresponding path program 1 times [2022-12-13 12:03:28,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:28,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989817590] [2022-12-13 12:03:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 1428 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2022-12-13 12:03:29,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:29,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989817590] [2022-12-13 12:03:29,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989817590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:29,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:29,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:03:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543849478] [2022-12-13 12:03:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:29,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:03:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:03:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:29,144 INFO L87 Difference]: Start difference. First operand 87274 states and 90899 transitions. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:32,024 INFO L93 Difference]: Finished difference Result 181371 states and 188799 transitions. [2022-12-13 12:03:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:03:32,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 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 1019 [2022-12-13 12:03:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:32,095 INFO L225 Difference]: With dead ends: 181371 [2022-12-13 12:03:32,095 INFO L226 Difference]: Without dead ends: 94099 [2022-12-13 12:03:32,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:32,132 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 786 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:32,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 642 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 12:03:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94099 states. [2022-12-13 12:03:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94099 to 87274. [2022-12-13 12:03:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87274 states, 87273 states have (on average 1.0413759123669406) internal successors, (90884), 87273 states have internal predecessors, (90884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87274 states to 87274 states and 90884 transitions. [2022-12-13 12:03:33,191 INFO L78 Accepts]: Start accepts. Automaton has 87274 states and 90884 transitions. Word has length 1019 [2022-12-13 12:03:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:33,191 INFO L495 AbstractCegarLoop]: Abstraction has 87274 states and 90884 transitions. [2022-12-13 12:03:33,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 87274 states and 90884 transitions. [2022-12-13 12:03:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2022-12-13 12:03:33,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:33,237 INFO L195 NwaCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2022-12-13 12:03:33,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 12:03:33,238 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash -85783755, now seen corresponding path program 1 times [2022-12-13 12:03:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:33,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737629579] [2022-12-13 12:03:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:33,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 1540 proven. 175 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-12-13 12:03:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:35,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737629579] [2022-12-13 12:03:35,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737629579] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:35,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963438834] [2022-12-13 12:03:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:35,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:35,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:35,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:35,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:03:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:35,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:03:35,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 1298 proven. 0 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2022-12-13 12:03:35,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:03:35,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963438834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:35,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:03:35,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 12:03:35,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603926519] [2022-12-13 12:03:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:35,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:03:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:03:35,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:35,741 INFO L87 Difference]: Start difference. First operand 87274 states and 90884 transitions. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:37,840 INFO L93 Difference]: Finished difference Result 175825 states and 183140 transitions. [2022-12-13 12:03:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:03:37,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 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 1026 [2022-12-13 12:03:37,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:37,917 INFO L225 Difference]: With dead ends: 175825 [2022-12-13 12:03:37,918 INFO L226 Difference]: Without dead ends: 88128 [2022-12-13 12:03:37,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:37,953 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 116 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:37,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 191 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 12:03:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88128 states. [2022-12-13 12:03:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88128 to 82589. [2022-12-13 12:03:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82589 states, 82588 states have (on average 1.0409502591175472) internal successors, (85970), 82588 states have internal predecessors, (85970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82589 states to 82589 states and 85970 transitions. [2022-12-13 12:03:38,887 INFO L78 Accepts]: Start accepts. Automaton has 82589 states and 85970 transitions. Word has length 1026 [2022-12-13 12:03:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:38,888 INFO L495 AbstractCegarLoop]: Abstraction has 82589 states and 85970 transitions. [2022-12-13 12:03:38,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 82589 states and 85970 transitions. [2022-12-13 12:03:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2022-12-13 12:03:38,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:38,918 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2022-12-13 12:03:38,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:03:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 12:03:39,121 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:39,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1759486490, now seen corresponding path program 1 times [2022-12-13 12:03:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:39,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252812253] [2022-12-13 12:03:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2258 backedges. 1567 proven. 446 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-12-13 12:03:40,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252812253] [2022-12-13 12:03:40,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252812253] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910201191] [2022-12-13 12:03:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:40,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:40,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:40,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:40,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:03:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:03:40,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2258 backedges. 1434 proven. 0 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2022-12-13 12:03:43,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:03:43,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910201191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:43,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:03:43,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 12:03:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153702769] [2022-12-13 12:03:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:43,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:03:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:03:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:43,247 INFO L87 Difference]: Start difference. First operand 82589 states and 85970 transitions. Second operand has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:45,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:03:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:48,072 INFO L93 Difference]: Finished difference Result 160922 states and 167108 transitions. [2022-12-13 12:03:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:03:48,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 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 1101 [2022-12-13 12:03:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:48,141 INFO L225 Difference]: With dead ends: 160922 [2022-12-13 12:03:48,141 INFO L226 Difference]: Without dead ends: 78335 [2022-12-13 12:03:48,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:03:48,182 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 127 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:48,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 675 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 12:03:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78335 states. [2022-12-13 12:03:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78335 to 77907. [2022-12-13 12:03:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77907 states, 77906 states have (on average 1.034747002798244) internal successors, (80613), 77906 states have internal predecessors, (80613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77907 states to 77907 states and 80613 transitions. [2022-12-13 12:03:49,012 INFO L78 Accepts]: Start accepts. Automaton has 77907 states and 80613 transitions. Word has length 1101 [2022-12-13 12:03:49,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:49,012 INFO L495 AbstractCegarLoop]: Abstraction has 77907 states and 80613 transitions. [2022-12-13 12:03:49,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:49,013 INFO L276 IsEmpty]: Start isEmpty. Operand 77907 states and 80613 transitions. [2022-12-13 12:03:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2022-12-13 12:03:49,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:49,060 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:49,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 12:03:49,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 12:03:49,263 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 658627176, now seen corresponding path program 1 times [2022-12-13 12:03:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:49,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506054162] [2022-12-13 12:03:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2022-12-13 12:03:50,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:50,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506054162] [2022-12-13 12:03:50,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506054162] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:50,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:50,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:03:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598867490] [2022-12-13 12:03:50,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:50,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:03:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:03:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:50,075 INFO L87 Difference]: Start difference. First operand 77907 states and 80613 transitions. Second operand has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:53,221 INFO L93 Difference]: Finished difference Result 185194 states and 191701 transitions. [2022-12-13 12:03:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:03:53,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 1230 [2022-12-13 12:03:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:53,308 INFO L225 Difference]: With dead ends: 185194 [2022-12-13 12:03:53,308 INFO L226 Difference]: Without dead ends: 106864 [2022-12-13 12:03:53,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:53,341 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 604 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:53,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 147 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 12:03:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106864 states. [2022-12-13 12:03:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106864 to 92392. [2022-12-13 12:03:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92392 states, 92391 states have (on average 1.0362697665357015) internal successors, (95742), 92391 states have internal predecessors, (95742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92392 states to 92392 states and 95742 transitions. [2022-12-13 12:03:54,380 INFO L78 Accepts]: Start accepts. Automaton has 92392 states and 95742 transitions. Word has length 1230 [2022-12-13 12:03:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:54,380 INFO L495 AbstractCegarLoop]: Abstraction has 92392 states and 95742 transitions. [2022-12-13 12:03:54,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 92392 states and 95742 transitions. [2022-12-13 12:03:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1233 [2022-12-13 12:03:54,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:54,431 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:54,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 12:03:54,432 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1792071239, now seen corresponding path program 1 times [2022-12-13 12:03:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:54,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335618642] [2022-12-13 12:03:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:54,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 1900 proven. 0 refuted. 0 times theorem prover too weak. 1315 trivial. 0 not checked. [2022-12-13 12:03:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:55,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335618642] [2022-12-13 12:03:55,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335618642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:55,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:55,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:03:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023792402] [2022-12-13 12:03:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:55,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:03:55,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:55,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:03:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:03:55,258 INFO L87 Difference]: Start difference. First operand 92392 states and 95742 transitions. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:57,370 INFO L93 Difference]: Finished difference Result 189034 states and 195750 transitions. [2022-12-13 12:03:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:03:57,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 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 1232 [2022-12-13 12:03:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:57,457 INFO L225 Difference]: With dead ends: 189034 [2022-12-13 12:03:57,457 INFO L226 Difference]: Without dead ends: 96644 [2022-12-13 12:03:57,504 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 [2022-12-13 12:03:57,505 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 261 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:57,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 226 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 12:03:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96644 states. [2022-12-13 12:03:58,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96644 to 93235. [2022-12-13 12:03:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93235 states, 93234 states have (on average 1.0332711242679709) internal successors, (96336), 93234 states have internal predecessors, (96336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93235 states to 93235 states and 96336 transitions. [2022-12-13 12:03:58,541 INFO L78 Accepts]: Start accepts. Automaton has 93235 states and 96336 transitions. Word has length 1232 [2022-12-13 12:03:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:58,542 INFO L495 AbstractCegarLoop]: Abstraction has 93235 states and 96336 transitions. [2022-12-13 12:03:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 93235 states and 96336 transitions. [2022-12-13 12:03:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1269 [2022-12-13 12:03:58,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:58,593 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:58,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 12:03:58,593 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1911825032, now seen corresponding path program 1 times [2022-12-13 12:03:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:58,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79086736] [2022-12-13 12:03:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3251 backedges. 1276 proven. 0 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2022-12-13 12:03:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:59,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79086736] [2022-12-13 12:03:59,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79086736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:03:59,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:03:59,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:03:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526866783] [2022-12-13 12:03:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:03:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:03:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:03:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:03:59,998 INFO L87 Difference]: Start difference. First operand 93235 states and 96336 transitions. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:03,291 INFO L93 Difference]: Finished difference Result 200521 states and 207088 transitions. [2022-12-13 12:04:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:04:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 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 1268 [2022-12-13 12:04:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:03,391 INFO L225 Difference]: With dead ends: 200521 [2022-12-13 12:04:03,391 INFO L226 Difference]: Without dead ends: 106863 [2022-12-13 12:04:03,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:04:03,434 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 680 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:03,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 174 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 12:04:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106863 states. [2022-12-13 12:04:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106863 to 84304. [2022-12-13 12:04:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84304 states, 84303 states have (on average 1.0327509104065098) internal successors, (87064), 84303 states have internal predecessors, (87064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84304 states to 84304 states and 87064 transitions. [2022-12-13 12:04:04,501 INFO L78 Accepts]: Start accepts. Automaton has 84304 states and 87064 transitions. Word has length 1268 [2022-12-13 12:04:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:04,501 INFO L495 AbstractCegarLoop]: Abstraction has 84304 states and 87064 transitions. [2022-12-13 12:04:04,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 84304 states and 87064 transitions. [2022-12-13 12:04:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1304 [2022-12-13 12:04:04,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:04,551 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-13 12:04:04,551 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash -742185805, now seen corresponding path program 1 times [2022-12-13 12:04:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:04,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779734073] [2022-12-13 12:04:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2299 backedges. 1561 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2022-12-13 12:04:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779734073] [2022-12-13 12:04:05,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779734073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:04:05,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:04:05,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:04:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039982603] [2022-12-13 12:04:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:04:05,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:04:05,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:04:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:04:05,390 INFO L87 Difference]: Start difference. First operand 84304 states and 87064 transitions. Second operand has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:08,160 INFO L93 Difference]: Finished difference Result 178407 states and 184123 transitions. [2022-12-13 12:04:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:04:08,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 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 1303 [2022-12-13 12:04:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:08,232 INFO L225 Difference]: With dead ends: 178407 [2022-12-13 12:04:08,232 INFO L226 Difference]: Without dead ends: 94105 [2022-12-13 12:04:08,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:04:08,267 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 602 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:08,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 110 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:04:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94105 states. [2022-12-13 12:04:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94105 to 83879. [2022-12-13 12:04:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83879 states, 83878 states have (on average 1.0320107775578817) internal successors, (86563), 83878 states have internal predecessors, (86563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83879 states to 83879 states and 86563 transitions. [2022-12-13 12:04:09,296 INFO L78 Accepts]: Start accepts. Automaton has 83879 states and 86563 transitions. Word has length 1303 [2022-12-13 12:04:09,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:09,297 INFO L495 AbstractCegarLoop]: Abstraction has 83879 states and 86563 transitions. [2022-12-13 12:04:09,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 83879 states and 86563 transitions. [2022-12-13 12:04:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1318 [2022-12-13 12:04:09,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:09,347 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:09,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-13 12:04:09,347 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1560406252, now seen corresponding path program 1 times [2022-12-13 12:04:09,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:09,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584491068] [2022-12-13 12:04:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:09,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3260 backedges. 1839 proven. 0 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2022-12-13 12:04:10,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:10,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584491068] [2022-12-13 12:04:10,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584491068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:04:10,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:04:10,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:04:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37142893] [2022-12-13 12:04:10,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:04:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:04:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:04:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:04:10,277 INFO L87 Difference]: Start difference. First operand 83879 states and 86563 transitions. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:13,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:13,075 INFO L93 Difference]: Finished difference Result 167327 states and 172529 transitions. [2022-12-13 12:04:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:04:13,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 1317 [2022-12-13 12:04:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:13,142 INFO L225 Difference]: With dead ends: 167327 [2022-12-13 12:04:13,142 INFO L226 Difference]: Without dead ends: 83450 [2022-12-13 12:04:13,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:04:13,177 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 541 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:13,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 93 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:04:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83450 states. [2022-12-13 12:04:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83450 to 62586. [2022-12-13 12:04:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62586 states, 62585 states have (on average 1.0286490373092594) internal successors, (64378), 62585 states have internal predecessors, (64378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62586 states to 62586 states and 64378 transitions. [2022-12-13 12:04:14,044 INFO L78 Accepts]: Start accepts. Automaton has 62586 states and 64378 transitions. Word has length 1317 [2022-12-13 12:04:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:14,044 INFO L495 AbstractCegarLoop]: Abstraction has 62586 states and 64378 transitions. [2022-12-13 12:04:14,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 62586 states and 64378 transitions. [2022-12-13 12:04:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1472 [2022-12-13 12:04:14,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:14,096 INFO L195 NwaCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 12:04:14,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-13 12:04:14,096 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash -697433157, now seen corresponding path program 1 times [2022-12-13 12:04:14,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:14,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924333658] [2022-12-13 12:04:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:14,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 442 proven. 1579 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-12-13 12:04:17,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:17,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924333658] [2022-12-13 12:04:17,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924333658] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:04:17,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233051478] [2022-12-13 12:04:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:17,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:04:17,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:04:17,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:04:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:04:18,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:04:29,156 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 87 DAG size of output: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:04:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 1212 proven. 0 refuted. 0 times theorem prover too weak. 1775 trivial. 0 not checked. [2022-12-13 12:04:32,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:04:32,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233051478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:04:32,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:04:32,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-12-13 12:04:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027751662] [2022-12-13 12:04:32,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:04:32,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:04:32,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:04:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:04:32,094 INFO L87 Difference]: Start difference. First operand 62586 states and 64378 transitions. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:41,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:41,675 INFO L93 Difference]: Finished difference Result 80045 states and 82239 transitions. [2022-12-13 12:04:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:04:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 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 1471 [2022-12-13 12:04:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:41,735 INFO L225 Difference]: With dead ends: 80045 [2022-12-13 12:04:41,735 INFO L226 Difference]: Without dead ends: 79618 [2022-12-13 12:04:41,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1469 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:04:41,750 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 701 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:41,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 108 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-12-13 12:04:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79618 states. [2022-12-13 12:04:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79618 to 62586. [2022-12-13 12:04:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62586 states, 62585 states have (on average 1.028633059039706) internal successors, (64377), 62585 states have internal predecessors, (64377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62586 states to 62586 states and 64377 transitions. [2022-12-13 12:04:42,526 INFO L78 Accepts]: Start accepts. Automaton has 62586 states and 64377 transitions. Word has length 1471 [2022-12-13 12:04:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:42,527 INFO L495 AbstractCegarLoop]: Abstraction has 62586 states and 64377 transitions. [2022-12-13 12:04:42,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 62586 states and 64377 transitions. [2022-12-13 12:04:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1547 [2022-12-13 12:04:42,582 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:42,582 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:42,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 12:04:42,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:42,785 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1220259687, now seen corresponding path program 1 times [2022-12-13 12:04:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52267822] [2022-12-13 12:04:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 542 proven. 2079 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 12:04:47,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52267822] [2022-12-13 12:04:47,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52267822] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:04:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762037470] [2022-12-13 12:04:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:47,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:47,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:04:47,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:04:47,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:04:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:48,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:04:48,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:04:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 1763 proven. 202 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2022-12-13 12:04:51,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:04:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 1763 proven. 202 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2022-12-13 12:04:57,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762037470] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:04:57,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:04:57,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 18 [2022-12-13 12:04:57,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215548894] [2022-12-13 12:04:57,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:04:57,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 12:04:57,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 12:04:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:04:57,881 INFO L87 Difference]: Start difference. First operand 62586 states and 64377 transitions. Second operand has 18 states, 18 states have (on average 175.66666666666666) internal successors, (3162), 18 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:05:00,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:02,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:04,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:06,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:08,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 12:05:10,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:18,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:20,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:23,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:25,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:28,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:31,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:35,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:37,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:39,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:42,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:44,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:47,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:51,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:54,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:56,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:05:58,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:01,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:03,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:07,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:06:10,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:12,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:15,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:18,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:20,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:23,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:25,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:28,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:31,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:35,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:37,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:39,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:41,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:43,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:45,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:47,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:49,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:51,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:53,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:06:59,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:02,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:07,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:07:10,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:16,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:22,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:25,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:31,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:35,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:07:47,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:07:58,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:08:00,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:08:03,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:08:05,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:08:07,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:08:11,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:08:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:08:13,209 INFO L93 Difference]: Finished difference Result 260102 states and 266802 transitions. [2022-12-13 12:08:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-12-13 12:08:13,210 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 175.66666666666666) internal successors, (3162), 18 states have internal predecessors, (3162), 0 states have call successors, (0), 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 1546 [2022-12-13 12:08:13,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:08:13,211 INFO L225 Difference]: With dead ends: 260102 [2022-12-13 12:08:13,211 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 12:08:13,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3168 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11415 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=4194, Invalid=22212, Unknown=0, NotChecked=0, Total=26406 [2022-12-13 12:08:13,267 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 23159 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 45840 mSolverCounterSat, 1985 mSolverCounterUnsat, 59 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23159 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 47884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1985 IncrementalHoareTripleChecker+Valid, 45840 IncrementalHoareTripleChecker+Invalid, 59 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:08:13,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23159 Valid, 763 Invalid, 47884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1985 Valid, 45840 Invalid, 59 Unknown, 0 Unchecked, 175.1s Time] [2022-12-13 12:08:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 12:08:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 12:08:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 12:08:13,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1546 [2022-12-13 12:08:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:08:13,268 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 12:08:13,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 175.66666666666666) internal successors, (3162), 18 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 12:08:13,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 12:08:13,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 12:08:13,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 12:08:13,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f882bc06-079e-4116-ba31-4bcccef3255b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-12-13 12:08:13,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.